Laser pointer discussion. Read/write reviews of laser pointers and laser pointer companies. Learn about all types of laser pointers and lasers





Welcome to Laser Pointer Forums! If you are looking for a laser pointer or want to compare different laser pointer companies, you may want to check out the LPF Laser Pointer Company Database.


Green Laser Pointers by Category Blue Laser Pointers by Category Red Laser Pointers by Category
Yellow Laser Pointers by Category Violet Laser Pointers by Category Orange Laser Pointers by Category
Top Laser Pointers by Power - 1 Watt+ Top Laser Pointers by Power - 500mW+ Top Laser Pointers by Power - 250mW+
Laser Pointer Database High Power Laser Pointers Laser Pointer Diodes


2.5 Watt Blue Thor M 2 Laser Pointer











Go Back   Laser Pointer Forums - Discuss Laser Pointers > Lasers > Experiments & Modifications

List of Laser Pointer Companies (link opens new window)



Reply
 
LinkBack Thread Tools Display Modes
Old 04-09-2015, 08:05 PM #1
Minamoto Kobayashi's Avatar
Class 2 Laser
 
Join Date: Aug 2010
Location: Padova - Italy
Posts: 391
Rep Power: 1353
Minamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond repute
Send a message via Skype™ to Minamoto Kobayashi
Minamoto Kobayashi Minamoto Kobayashi is online now
Class 2 Laser
Minamoto Kobayashi's Avatar
 
Join Date: Aug 2010
Location: Padova - Italy
Posts: 391
Rep Power: 1353
Minamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond repute
Send a message via Skype™ to Minamoto Kobayashi
Exclamation Exact frequency range for a DPSS 532 nm and a 445 nm lasers.

I'm starting to order to a big company in Italy some new lenses for my five Laserglow beam expanders.
All the lenses of my expanders were scratched and full of imperfections from origin, so I decide to buy new sets built much better of the originals.
I do not understand why a serious company like Laserglow insists to sell very expensive expanders with the lenses ruined at factory.
The last expander that I bought about one week ago show the same defects of all the others expanders.
I asked always to check the lenses before to ship them with the same results ...
Take a look of the horrid surface of the last lenses that I have bought last week:



If You think that this expander costs 349 dollars plus courier plus duty taxes,
it is a totally unacceptable issue!
So now I need some infos about the diode frequency to make an exact coating to apply to the new raw lenses.
I have a NDB7875 9mm 445nm diode @2W, a NDB7A75 3.5W 445nm diode
@5W and a Hercules with a 532nm DPSS diode.

To obtain the best coating performance I need two parameters: the central frequency and the range before and after the central frequency.
So there is anyone that can help me to find those specs?
For example: the 532nm DPSS diode is not overpushed, so the central frequency is really 532. It is enough to make a +-5% gap?
For the 445nm ones I have some doubts: in fact overpushing the diode surely will increase the frequency, but how much? It is important for me to know the central frequency of the two 445nm diodes to make a correct bell centered at that frequency.
Please remind that a closer bell centered to a wrong mid frequency can cause a big loss of power, but also a thicker bell can cause a noticeable loss of power due to the increased reflection area of the lens.


__________________
- Sinner Cypreus II 18650 405nm 1000 mW
- Jayrob Aurora Stainless Steel 18650 445nm 891 mW Average 950 mW Peak
- Jayrob Frankenstein 445nm 2875 mW Average 3108 mW Peak With Modified Recoated Laserglow 10x Beam Expander
- Jetlaser PL-E Pro Focusable 445 nm 4000 mW Peak 3500 mW Average With Jetlaser 10x Beam Expander
- Mrcrouse Zaser Black Anodized Custom Head/Pill 445 nm 4970 mW Peak 4670 mW Average With Laserglow Modified Recoated 10x Beam Expander
- Sinner Cypreus IIIb 450nm 4757mW With Three Elements Glass Lenses And Adapted Linos 10x Beam Expander
- Sinner Cypreus II XL Gold Plated 24k 465nm 4200 mW Peak With Three Elements Glass Lenses
- CDBEAM Blue Balista 467nm 5088mW Optical Corrected 8 Lenses System
- Mrcrouse Zaser XL II Silver Metallized Paint 520nm 1350mW Peak With Corrective Optics And Linos Beam Expander
- CDBEAM Verde Volcano 520nm 2600 mW Dual Diode Build With PBS, Corrective Optics, Variable Output Power And 10x Variable Magnification Linos Beam Expander
- Laserglow Hercules 600 532nm 650 mW With Adapted 8x Linos beam expander
- Jayrob Aurora Stainless Steel 18650 532nm 195mW Peak 181 mW Average
- Jayrob Aurora Stainless Steel 18650 635nm 284 mW Peak 271 mW Average
- Sci-Fi Lasers Arcane II 635nm Light Gray Metallic Powder Coated 675 mW Peak 645 mW Average With Three Elements Glass Lenses
- Jayzereer C-Mount Red Mag Build 650nm 1600 mW

- Aurora SH-032 Stainless Steel 160 Lumens
- Nitecore TN36UTvn Modded Ultra-Directive 1 MLux !!
- Fenix TK75vnQ Modded Ultra Flood & Throw 14.000 Lumens
- Fire-Foxes FF4 6000 Lumens

- Laserbee 7 Watt Laser Power Meter Ophir Thermopile

Last edited by Minamoto Kobayashi; 04-09-2015 at 08:07 PM.
Minamoto Kobayashi is online now   Reply With Quote










Old 04-09-2015, 09:04 PM #2
RYDorDIE278's Avatar
Class 2M Laser
 
Join Date: May 2013
Location: New Zealand - Taranaki
Posts: 542
Rep Power: 76
RYDorDIE278 has a reputation beyond reputeRYDorDIE278 has a reputation beyond reputeRYDorDIE278 has a reputation beyond reputeRYDorDIE278 has a reputation beyond reputeRYDorDIE278 has a reputation beyond reputeRYDorDIE278 has a reputation beyond reputeRYDorDIE278 has a reputation beyond reputeRYDorDIE278 has a reputation beyond reputeRYDorDIE278 has a reputation beyond reputeRYDorDIE278 has a reputation beyond reputeRYDorDIE278 has a reputation beyond repute
RYDorDIE278 RYDorDIE278 is online now
Class 2M Laser
RYDorDIE278's Avatar
 
Join Date: May 2013
Location: New Zealand - Taranaki
Posts: 542
Rep Power: 76
RYDorDIE278 has a reputation beyond reputeRYDorDIE278 has a reputation beyond reputeRYDorDIE278 has a reputation beyond reputeRYDorDIE278 has a reputation beyond reputeRYDorDIE278 has a reputation beyond reputeRYDorDIE278 has a reputation beyond reputeRYDorDIE278 has a reputation beyond reputeRYDorDIE278 has a reputation beyond reputeRYDorDIE278 has a reputation beyond reputeRYDorDIE278 has a reputation beyond reputeRYDorDIE278 has a reputation beyond repute
Default Re: Exact frequency range for a DPSS 532 nm and a 445 nm lasers.

Im not sure....!
but would the wavelength change as the diode warms up (for the 445nm lasers) for example a cold start may be 448nm in the first 15 seconds or something and after 45 seconds maybe 450nm? which would require a bit wider wavelength coating?
Just me guessing really, i have no idea and i dont have a spectro to test either
__________________
LaserZ:
405nm 1W ZASER w/Grenade Tube
445nm 1.8W C6 Jayrob D.I.Y. Kit
445nm 2.1W+ 501b By TheJoker301
445nm 3.5W Copper DominatoR by Blord
520nm 200mW+ 501b By TheJoker301
650nm 300mW from NO4H99

LPM:
*Laserbee 2.5W USB*

Battery Charger:
*Ultrafire WF-188*
*Nitecore Intellicharger i4*
*OPUS BT-C3100 v2.1*
RYDorDIE278 is online now   Reply With Quote
Old 04-09-2015, 09:16 PM #3
diachi's Avatar
Class 4 Laser
 
Join Date: Feb 2008
Location: Yellowknife, NT, Canada
Posts: 7,319
Rep Power: 9125
diachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond repute
Send a message via Skype™ to diachi
diachi diachi is online now
Class 4 Laser
diachi's Avatar
 
Join Date: Feb 2008
Location: Yellowknife, NT, Canada
Posts: 7,319
Rep Power: 9125
diachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond repute
Send a message via Skype™ to diachi
Default Re: Exact frequency range for a DPSS 532 nm and a 445 nm lasers.

Quote:
Originally Posted by Minamoto Kobayashi View Post
I'm starting to order to a big company in Italy some new lenses for my five Laserglow beam expanders.
All the lenses of my expanders were scratched and full of imperfections from origin, so I decide to buy new sets built much better of the originals.
I do not understand why a serious company like Laserglow insists to sell very expensive expanders with the lenses ruined at factory.
The last expander that I bought about one week ago show the same defects of all the others expanders.
I asked always to check the lenses before to ship them with the same results ...
Take a look of the horrid surface of the last lenses that I have bought last week:



If You think that this expander costs 349 dollars plus courier plus duty taxes,
it is a totally unacceptable issue!
So now I need some infos about the diode frequency to make an exact coating to apply to the new raw lenses.
I have a NDB7875 9mm 445nm diode @2W, a NDB7A75 3.5W 445nm diode
@5W and a Hercules with a 532nm DPSS diode.

To obtain the best coating performance I need two parameters: the central frequency and the range before and after the central frequency.
So there is anyone that can help me to find those specs?
For example: the 532nm DPSS diode is not overpushed, so the central frequency is really 532. It is enough to make a +-5% gap?
For the 445nm ones I have some doubts: in fact overpushing the diode surely will increase the frequency, but how much? It is important for me to know the central frequency of the two 445nm diodes to make a correct bell centered at that frequency.
Please remind that a closer bell centered to a wrong mid frequency can cause a big loss of power, but also a thicker bell can cause a noticeable loss of power due to the increased reflection area of the lens.
DPSS will be much narrower than 5%, even 1% would be wider than I'd expect for 532nm DPSS - DPSS is not just a diode, you also have an Nd:YAG/YVO4 crystal to produce 1064nm from the 808nm diode and a KTP crystal to double that to 532nm. The 808nm output from the diode could shift by a few nm either way, but that wouldn't change the 532nm output.

For diodes - it's hard to tell, the wavelength will shift with temperature - the datasheet will tell you how much it will vary per unit temperature - but the diodes won't all be the same wavelength at the same temperature, you'd need to test yours with a spectrometer.

I wouldn't expect your coatings to be so narrow that a 10nm shift in either direction would cause an issue though.
__________________


445nm | Sanwu Laser Pocket Series | 400mW Metered
445nm | NDB7242E Pen Build | 60mW Metered | >>Build Thread<<
488nm | Spectra Physics 163 Argon | ~30mW Metered
515nm | PL515 Pen Build | 50mW Metered | >>Build Thread<<
520nm | Laserlands 520 | 5mW | For Review Awaiting arrival
532nm | Gearbest 303 Pointer | 50mW Metered
532nm | Gearbest JD.850 Pointer | 30mW Metered (I think, need to re-test).
633nm | HeNe | 6mW
633nm | Spectra Physics 155 HeNe | <1mW >>Thread<<
650nm | Sanwu Laser Pocket Series | 200mW Metered
808nm | Melles Griot 532nm Lab Unit | No Crystals >10W | X2



Check out my Reddit Subreddit! >>/r/laserpointers<<


Last edited by diachi; 04-09-2015 at 09:17 PM.
diachi is online now   Reply With Quote
Old 04-09-2015, 09:20 PM #4
Minamoto Kobayashi's Avatar
Class 2 Laser
 
Join Date: Aug 2010
Location: Padova - Italy
Posts: 391
Rep Power: 1353
Minamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond repute
Send a message via Skype™ to Minamoto Kobayashi
Minamoto Kobayashi Minamoto Kobayashi is online now
Class 2 Laser
Minamoto Kobayashi's Avatar
 
Join Date: Aug 2010
Location: Padova - Italy
Posts: 391
Rep Power: 1353
Minamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond repute
Send a message via Skype™ to Minamoto Kobayashi
Default Re: Exact frequency range for a DPSS 532 nm and a 445 nm lasers.

Well, since I will use the laser after warmup, it is important to know the center frequency that the diodes emits when it is warm.
For the 532 nm, a +- 2% could be enough, so the bell will start at 521,3 nm and end at 542,6 nm, that is 21nm gap, more than enough in my modest opinion.
For the 445nm I'm really in doubt, because I do not know the central frequency after I overdrived the diode.
__________________
- Sinner Cypreus II 18650 405nm 1000 mW
- Jayrob Aurora Stainless Steel 18650 445nm 891 mW Average 950 mW Peak
- Jayrob Frankenstein 445nm 2875 mW Average 3108 mW Peak With Modified Recoated Laserglow 10x Beam Expander
- Jetlaser PL-E Pro Focusable 445 nm 4000 mW Peak 3500 mW Average With Jetlaser 10x Beam Expander
- Mrcrouse Zaser Black Anodized Custom Head/Pill 445 nm 4970 mW Peak 4670 mW Average With Laserglow Modified Recoated 10x Beam Expander
- Sinner Cypreus IIIb 450nm 4757mW With Three Elements Glass Lenses And Adapted Linos 10x Beam Expander
- Sinner Cypreus II XL Gold Plated 24k 465nm 4200 mW Peak With Three Elements Glass Lenses
- CDBEAM Blue Balista 467nm 5088mW Optical Corrected 8 Lenses System
- Mrcrouse Zaser XL II Silver Metallized Paint 520nm 1350mW Peak With Corrective Optics And Linos Beam Expander
- CDBEAM Verde Volcano 520nm 2600 mW Dual Diode Build With PBS, Corrective Optics, Variable Output Power And 10x Variable Magnification Linos Beam Expander
- Laserglow Hercules 600 532nm 650 mW With Adapted 8x Linos beam expander
- Jayrob Aurora Stainless Steel 18650 532nm 195mW Peak 181 mW Average
- Jayrob Aurora Stainless Steel 18650 635nm 284 mW Peak 271 mW Average
- Sci-Fi Lasers Arcane II 635nm Light Gray Metallic Powder Coated 675 mW Peak 645 mW Average With Three Elements Glass Lenses
- Jayzereer C-Mount Red Mag Build 650nm 1600 mW

- Aurora SH-032 Stainless Steel 160 Lumens
- Nitecore TN36UTvn Modded Ultra-Directive 1 MLux !!
- Fenix TK75vnQ Modded Ultra Flood & Throw 14.000 Lumens
- Fire-Foxes FF4 6000 Lumens

- Laserbee 7 Watt Laser Power Meter Ophir Thermopile
Minamoto Kobayashi is online now   Reply With Quote
Old 04-09-2015, 09:21 PM #5
Minamoto Kobayashi's Avatar
Class 2 Laser
 
Join Date: Aug 2010
Location: Padova - Italy
Posts: 391
Rep Power: 1353
Minamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond repute
Send a message via Skype™ to Minamoto Kobayashi
Minamoto Kobayashi Minamoto Kobayashi is online now
Class 2 Laser
Minamoto Kobayashi's Avatar
 
Join Date: Aug 2010
Location: Padova - Italy
Posts: 391
Rep Power: 1353
Minamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond repute
Send a message via Skype™ to Minamoto Kobayashi
Default Re: Exact frequency range for a DPSS 532 nm and a 445 nm lasers.

Oops I replied when You was writing Mr. Diachi . So Do You think that 1% will be good for the 532nm one?
Due to the high power involved with the 445 nm ones (5W), if I create a too narrow curve there is the risk that too much power could
be stopped by the coating, with a consequent burning of the coating itself. This is why it is so important to know as close as possible the central
diode frequency.
__________________
- Sinner Cypreus II 18650 405nm 1000 mW
- Jayrob Aurora Stainless Steel 18650 445nm 891 mW Average 950 mW Peak
- Jayrob Frankenstein 445nm 2875 mW Average 3108 mW Peak With Modified Recoated Laserglow 10x Beam Expander
- Jetlaser PL-E Pro Focusable 445 nm 4000 mW Peak 3500 mW Average With Jetlaser 10x Beam Expander
- Mrcrouse Zaser Black Anodized Custom Head/Pill 445 nm 4970 mW Peak 4670 mW Average With Laserglow Modified Recoated 10x Beam Expander
- Sinner Cypreus IIIb 450nm 4757mW With Three Elements Glass Lenses And Adapted Linos 10x Beam Expander
- Sinner Cypreus II XL Gold Plated 24k 465nm 4200 mW Peak With Three Elements Glass Lenses
- CDBEAM Blue Balista 467nm 5088mW Optical Corrected 8 Lenses System
- Mrcrouse Zaser XL II Silver Metallized Paint 520nm 1350mW Peak With Corrective Optics And Linos Beam Expander
- CDBEAM Verde Volcano 520nm 2600 mW Dual Diode Build With PBS, Corrective Optics, Variable Output Power And 10x Variable Magnification Linos Beam Expander
- Laserglow Hercules 600 532nm 650 mW With Adapted 8x Linos beam expander
- Jayrob Aurora Stainless Steel 18650 532nm 195mW Peak 181 mW Average
- Jayrob Aurora Stainless Steel 18650 635nm 284 mW Peak 271 mW Average
- Sci-Fi Lasers Arcane II 635nm Light Gray Metallic Powder Coated 675 mW Peak 645 mW Average With Three Elements Glass Lenses
- Jayzereer C-Mount Red Mag Build 650nm 1600 mW

- Aurora SH-032 Stainless Steel 160 Lumens
- Nitecore TN36UTvn Modded Ultra-Directive 1 MLux !!
- Fenix TK75vnQ Modded Ultra Flood & Throw 14.000 Lumens
- Fire-Foxes FF4 6000 Lumens

- Laserbee 7 Watt Laser Power Meter Ophir Thermopile

Last edited by Minamoto Kobayashi; 04-09-2015 at 09:27 PM.
Minamoto Kobayashi is online now   Reply With Quote
Old 04-09-2015, 10:03 PM #6
diachi's Avatar
Class 4 Laser
 
Join Date: Feb 2008
Location: Yellowknife, NT, Canada
Posts: 7,319
Rep Power: 9125
diachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond repute
Send a message via Skype™ to diachi
diachi diachi is online now
Class 4 Laser
diachi's Avatar
 
Join Date: Feb 2008
Location: Yellowknife, NT, Canada
Posts: 7,319
Rep Power: 9125
diachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond repute
Send a message via Skype™ to diachi
Default Re: Exact frequency range for a DPSS 532 nm and a 445 nm lasers.

Quote:
Originally Posted by Minamoto Kobayashi View Post
Oops I replied when You was writing Mr. Diachi . So Do You think that 1% will be good for the 532nm one?
Due to the high power involved with the 445 nm ones (5W), if I create a too narrow curve there is the risk that too much power could
be stopped by the coating, with a consequent burning of the coating itself. This is why it is so important to know as close as possible the central
diode frequency.

I think you are over thinking things, I'm not sure what coatings you are planning on using but <2% reflectance for 400-700nm broadband AR Coatings for 0-45 degrees incidence is a perfectly reasonable value. At 5W that is only 0.1W reflected with 4.9W transmitted - Very little of that will be absorbed and the damage threshold on your coatings should be more than able to cope with that.

I am looking at some optics just now (with the above mentioned parameters) that have damage threshold of 3J/cm^2 for a 10ns pulse - There is no way you'd damage a coating like that with 5W CW of 445.

See attached images - 532nm AR on left of image 1, broadband AR image 2.

The performance loss from 532nm specific AR to broadband isn't that huge. 1-2% should be reasonable for 532nm if you want to go that way - I'd go for more like 5% for the 445.

Personally I'd use broadband...

Edit: Just realized how small those images are... Here is a page with a list of AR coating options: http://eksmaoptics.com/optical-compo...tive-coatings/

Thanks!
Attached Thumbnails
Exact frequency range for a DPSS 532 nm and a 445 nm lasers.-3-2-.jpeg  
Attached Images
 
__________________


445nm | Sanwu Laser Pocket Series | 400mW Metered
445nm | NDB7242E Pen Build | 60mW Metered | >>Build Thread<<
488nm | Spectra Physics 163 Argon | ~30mW Metered
515nm | PL515 Pen Build | 50mW Metered | >>Build Thread<<
520nm | Laserlands 520 | 5mW | For Review Awaiting arrival
532nm | Gearbest 303 Pointer | 50mW Metered
532nm | Gearbest JD.850 Pointer | 30mW Metered (I think, need to re-test).
633nm | HeNe | 6mW
633nm | Spectra Physics 155 HeNe | <1mW >>Thread<<
650nm | Sanwu Laser Pocket Series | 200mW Metered
808nm | Melles Griot 532nm Lab Unit | No Crystals >10W | X2



Check out my Reddit Subreddit! >>/r/laserpointers<<


Last edited by diachi; 04-09-2015 at 10:05 PM.
diachi is online now   Reply With Quote
Old 04-09-2015, 10:21 PM #7
Minamoto Kobayashi's Avatar
Class 2 Laser
 
Join Date: Aug 2010
Location: Padova - Italy
Posts: 391
Rep Power: 1353
Minamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond repute
Send a message via Skype™ to Minamoto Kobayashi
Minamoto Kobayashi Minamoto Kobayashi is online now
Class 2 Laser
Minamoto Kobayashi's Avatar
 
Join Date: Aug 2010
Location: Padova - Italy
Posts: 391
Rep Power: 1353
Minamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond repute
Send a message via Skype™ to Minamoto Kobayashi
Default Re: Exact frequency range for a DPSS 532 nm and a 445 nm lasers.

Thanks for the hints!
So do You suggest to create a coating with +-1 +-2% gap from the center of the main frequency for both 445 and 532 nm?
__________________
- Sinner Cypreus II 18650 405nm 1000 mW
- Jayrob Aurora Stainless Steel 18650 445nm 891 mW Average 950 mW Peak
- Jayrob Frankenstein 445nm 2875 mW Average 3108 mW Peak With Modified Recoated Laserglow 10x Beam Expander
- Jetlaser PL-E Pro Focusable 445 nm 4000 mW Peak 3500 mW Average With Jetlaser 10x Beam Expander
- Mrcrouse Zaser Black Anodized Custom Head/Pill 445 nm 4970 mW Peak 4670 mW Average With Laserglow Modified Recoated 10x Beam Expander
- Sinner Cypreus IIIb 450nm 4757mW With Three Elements Glass Lenses And Adapted Linos 10x Beam Expander
- Sinner Cypreus II XL Gold Plated 24k 465nm 4200 mW Peak With Three Elements Glass Lenses
- CDBEAM Blue Balista 467nm 5088mW Optical Corrected 8 Lenses System
- Mrcrouse Zaser XL II Silver Metallized Paint 520nm 1350mW Peak With Corrective Optics And Linos Beam Expander
- CDBEAM Verde Volcano 520nm 2600 mW Dual Diode Build With PBS, Corrective Optics, Variable Output Power And 10x Variable Magnification Linos Beam Expander
- Laserglow Hercules 600 532nm 650 mW With Adapted 8x Linos beam expander
- Jayrob Aurora Stainless Steel 18650 532nm 195mW Peak 181 mW Average
- Jayrob Aurora Stainless Steel 18650 635nm 284 mW Peak 271 mW Average
- Sci-Fi Lasers Arcane II 635nm Light Gray Metallic Powder Coated 675 mW Peak 645 mW Average With Three Elements Glass Lenses
- Jayzereer C-Mount Red Mag Build 650nm 1600 mW

- Aurora SH-032 Stainless Steel 160 Lumens
- Nitecore TN36UTvn Modded Ultra-Directive 1 MLux !!
- Fenix TK75vnQ Modded Ultra Flood & Throw 14.000 Lumens
- Fire-Foxes FF4 6000 Lumens

- Laserbee 7 Watt Laser Power Meter Ophir Thermopile
Minamoto Kobayashi is online now   Reply With Quote
Old 04-09-2015, 10:26 PM #8
diachi's Avatar
Class 4 Laser
 
Join Date: Feb 2008
Location: Yellowknife, NT, Canada
Posts: 7,319
Rep Power: 9125
diachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond repute
Send a message via Skype™ to diachi
diachi diachi is online now
Class 4 Laser
diachi's Avatar
 
Join Date: Feb 2008
Location: Yellowknife, NT, Canada
Posts: 7,319
Rep Power: 9125
diachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond repute
Send a message via Skype™ to diachi
Default Re: Exact frequency range for a DPSS 532 nm and a 445 nm lasers.

Quote:
Originally Posted by Minamoto Kobayashi View Post
Thanks for the hints!
So do You suggest to create a coating with +-1 +-2% gap from the center of the main frequency for both 445 and 532 nm?
If it were me I'd just use a broadband AR coat covering 400 to 600 or 700nm - I'd expect reasonable performance with that, if you're running at 5W then you won't even notice the losses.

If you want to go narrower and get a slight performance increase then I'd go 2% for 532nm and 5% for 445.
__________________


445nm | Sanwu Laser Pocket Series | 400mW Metered
445nm | NDB7242E Pen Build | 60mW Metered | >>Build Thread<<
488nm | Spectra Physics 163 Argon | ~30mW Metered
515nm | PL515 Pen Build | 50mW Metered | >>Build Thread<<
520nm | Laserlands 520 | 5mW | For Review Awaiting arrival
532nm | Gearbest 303 Pointer | 50mW Metered
532nm | Gearbest JD.850 Pointer | 30mW Metered (I think, need to re-test).
633nm | HeNe | 6mW
633nm | Spectra Physics 155 HeNe | <1mW >>Thread<<
650nm | Sanwu Laser Pocket Series | 200mW Metered
808nm | Melles Griot 532nm Lab Unit | No Crystals >10W | X2



Check out my Reddit Subreddit! >>/r/laserpointers<<

diachi is online now   Reply With Quote
Old 04-11-2015, 12:33 AM #9
Minamoto Kobayashi's Avatar
Class 2 Laser
 
Join Date: Aug 2010
Location: Padova - Italy
Posts: 391
Rep Power: 1353
Minamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond repute
Send a message via Skype™ to Minamoto Kobayashi
Minamoto Kobayashi Minamoto Kobayashi is online now
Class 2 Laser
Minamoto Kobayashi's Avatar
 
Join Date: Aug 2010
Location: Padova - Italy
Posts: 391
Rep Power: 1353
Minamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond repute
Send a message via Skype™ to Minamoto Kobayashi
Default Re: Exact frequency range for a DPSS 532 nm and a 445 nm lasers.

Thanks Diachi, now I ask to the company to create for me the coating with the parameters that You have suggested me.
__________________
- Sinner Cypreus II 18650 405nm 1000 mW
- Jayrob Aurora Stainless Steel 18650 445nm 891 mW Average 950 mW Peak
- Jayrob Frankenstein 445nm 2875 mW Average 3108 mW Peak With Modified Recoated Laserglow 10x Beam Expander
- Jetlaser PL-E Pro Focusable 445 nm 4000 mW Peak 3500 mW Average With Jetlaser 10x Beam Expander
- Mrcrouse Zaser Black Anodized Custom Head/Pill 445 nm 4970 mW Peak 4670 mW Average With Laserglow Modified Recoated 10x Beam Expander
- Sinner Cypreus IIIb 450nm 4757mW With Three Elements Glass Lenses And Adapted Linos 10x Beam Expander
- Sinner Cypreus II XL Gold Plated 24k 465nm 4200 mW Peak With Three Elements Glass Lenses
- CDBEAM Blue Balista 467nm 5088mW Optical Corrected 8 Lenses System
- Mrcrouse Zaser XL II Silver Metallized Paint 520nm 1350mW Peak With Corrective Optics And Linos Beam Expander
- CDBEAM Verde Volcano 520nm 2600 mW Dual Diode Build With PBS, Corrective Optics, Variable Output Power And 10x Variable Magnification Linos Beam Expander
- Laserglow Hercules 600 532nm 650 mW With Adapted 8x Linos beam expander
- Jayrob Aurora Stainless Steel 18650 532nm 195mW Peak 181 mW Average
- Jayrob Aurora Stainless Steel 18650 635nm 284 mW Peak 271 mW Average
- Sci-Fi Lasers Arcane II 635nm Light Gray Metallic Powder Coated 675 mW Peak 645 mW Average With Three Elements Glass Lenses
- Jayzereer C-Mount Red Mag Build 650nm 1600 mW

- Aurora SH-032 Stainless Steel 160 Lumens
- Nitecore TN36UTvn Modded Ultra-Directive 1 MLux !!
- Fenix TK75vnQ Modded Ultra Flood & Throw 14.000 Lumens
- Fire-Foxes FF4 6000 Lumens

- Laserbee 7 Watt Laser Power Meter Ophir Thermopile
Minamoto Kobayashi is online now   Reply With Quote
Old 04-12-2015, 08:42 PM #10
Class 3R Laser
 
Join Date: Jun 2007
Posts: 1,393
Rep Power: 2073
steve001 has a reputation beyond reputesteve001 has a reputation beyond reputesteve001 has a reputation beyond reputesteve001 has a reputation beyond reputesteve001 has a reputation beyond reputesteve001 has a reputation beyond reputesteve001 has a reputation beyond reputesteve001 has a reputation beyond reputesteve001 has a reputation beyond reputesteve001 has a reputation beyond reputesteve001 has a reputation beyond repute
steve001 steve001 is offline
Class 3R Laser
 
Join Date: Jun 2007
Posts: 1,393
Rep Power: 2073
steve001 has a reputation beyond reputesteve001 has a reputation beyond reputesteve001 has a reputation beyond reputesteve001 has a reputation beyond reputesteve001 has a reputation beyond reputesteve001 has a reputation beyond reputesteve001 has a reputation beyond reputesteve001 has a reputation beyond reputesteve001 has a reputation beyond reputesteve001 has a reputation beyond reputesteve001 has a reputation beyond repute
Default Re: Exact frequency range for a DPSS 532 nm and a 445 nm lasers.

Quote:
Originally Posted by Minamoto Kobayashi View Post
I'm starting to order to a big company in Italy some new lenses for my five Laserglow beam expanders.
All the lenses of my expanders were scratched and full of imperfections from origin, so I decide to buy new sets built much better of the originals.
I do not understand why a serious company like Laserglow insists to sell very expensive expanders with the lenses ruined at factory.
The last expander that I bought about one week ago show the same defects of all the others expanders.
I asked always to check the lenses before to ship them with the same results ...
Take a look of the horrid surface of the last lenses that I have bought last week:



If You think that this expander costs 349 dollars plus courier plus duty taxes,
it is a totally unacceptable issue!
So now I need some infos about the diode frequency to make an exact coating to apply to the new raw lenses.
I have a NDB7875 9mm 445nm diode @2W, a NDB7A75 3.5W 445nm diode
@5W and a Hercules with a 532nm DPSS diode.

To obtain the best coating performance I need two parameters: the central frequency and the range before and after the central frequency.
So there is anyone that can help me to find those specs?
For example: the 532nm DPSS diode is not overpushed, so the central frequency is really 532. It is enough to make a +-5% gap?
For the 445nm ones I have some doubts: in fact overpushing the diode surely will increase the frequency, but how much? It is important for me to know the central frequency of the two 445nm diodes to make a correct bell centered at that frequency.
Please remind that a closer bell centered to a wrong mid frequency can cause a big loss of power, but also a thicker bell can cause a noticeable loss of power due to the increased reflection area of the lens.
Do you know this company? Edmund Optics (Italia) They carry a wide variety of off the shelf ready AR coated lenses http://www.edmundoptics.eu/?site=WE&...163.1428871053
steve001 is offline   Reply With Quote
Old 04-15-2015, 06:34 PM #11
Class 2 Laser
 
Join Date: Jan 2011
Posts: 357
Rep Power: 694
lazeristasUVISIR has a reputation beyond reputelazeristasUVISIR has a reputation beyond reputelazeristasUVISIR has a reputation beyond reputelazeristasUVISIR has a reputation beyond reputelazeristasUVISIR has a reputation beyond reputelazeristasUVISIR has a reputation beyond reputelazeristasUVISIR has a reputation beyond reputelazeristasUVISIR has a reputation beyond reputelazeristasUVISIR has a reputation beyond reputelazeristasUVISIR has a reputation beyond reputelazeristasUVISIR has a reputation beyond repute
lazeristasUVISIR lazeristasUVISIR is offline
Class 2 Laser
 
Join Date: Jan 2011
Posts: 357
Rep Power: 694
lazeristasUVISIR has a reputation beyond reputelazeristasUVISIR has a reputation beyond reputelazeristasUVISIR has a reputation beyond reputelazeristasUVISIR has a reputation beyond reputelazeristasUVISIR has a reputation beyond reputelazeristasUVISIR has a reputation beyond reputelazeristasUVISIR has a reputation beyond reputelazeristasUVISIR has a reputation beyond reputelazeristasUVISIR has a reputation beyond reputelazeristasUVISIR has a reputation beyond reputelazeristasUVISIR has a reputation beyond repute
Default Re: Exact frequency range for a DPSS 532 nm and a 445 nm lasers.

Quote:
Originally Posted by Minamoto Kobayashi View Post
I have a NDB7875 9mm 445nm diode @2W, a NDB7A75 3.5W 445nm diode
@5W and a Hercules with a 532nm DPSS diode.

To obtain the best coating performance I need two parameters: the central frequency and the range before and after the central frequency.
So there is anyone that can help me to find those specs?
For example: the 532nm DPSS diode is not overpushed, so the central frequency is really 532. It is enough to make a +-5% gap?
For the 445nm ones I have some doubts: in fact overpushing the diode surely will increase the frequency, but how much? It is important for me to know the central frequency of the two 445nm diodes to make a correct bell centered at that frequency.
Do you want to order custom made coated lenses of a very small quantity? That might cost a lot.

As suggested look what is available at other companies like EO, Thorlabs, Newport, CVI/Melles Griot.

As to your question:
532 nm +/- 1 nm. Even 0.5 nm.

445 is more tricky.
NDB7875 435-455 from datasheet
NDB7A75. I don't have a datasheet. A similar NDB7K75 has 440 nm (min) 448 nm (typ) 455 nm (max)
__________________
L is for Lasers, and they are good for me.
lazeristasUVISIR is offline   Reply With Quote
Old 04-15-2015, 07:01 PM #12
Minamoto Kobayashi's Avatar
Class 2 Laser
 
Join Date: Aug 2010
Location: Padova - Italy
Posts: 391
Rep Power: 1353
Minamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond repute
Send a message via Skype™ to Minamoto Kobayashi
Minamoto Kobayashi Minamoto Kobayashi is online now
Class 2 Laser
Minamoto Kobayashi's Avatar
 
Join Date: Aug 2010
Location: Padova - Italy
Posts: 391
Rep Power: 1353
Minamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond repute
Send a message via Skype™ to Minamoto Kobayashi
Default Re: Exact frequency range for a DPSS 532 nm and a 445 nm lasers.

Thanks for the hints, I will try!
Unluckly the lenses that I'm looking for has very special features:


Plano Convex Lens:
base curve outer (convex): +9.00 diopters
base curve inner (concave): -1.25 diopters
dioptic power: +10.65
thickness at the center: 4.15 mm
diameter: 30 mm

Convex lens:
base curve outer (convex): +12.35 diopters
base curve inner (concave): -6.5 diopters
dioptic power: +6.75
thickness at the center: 3.3 mm
diameter: 30 mm
__________________
- Sinner Cypreus II 18650 405nm 1000 mW
- Jayrob Aurora Stainless Steel 18650 445nm 891 mW Average 950 mW Peak
- Jayrob Frankenstein 445nm 2875 mW Average 3108 mW Peak With Modified Recoated Laserglow 10x Beam Expander
- Jetlaser PL-E Pro Focusable 445 nm 4000 mW Peak 3500 mW Average With Jetlaser 10x Beam Expander
- Mrcrouse Zaser Black Anodized Custom Head/Pill 445 nm 4970 mW Peak 4670 mW Average With Laserglow Modified Recoated 10x Beam Expander
- Sinner Cypreus IIIb 450nm 4757mW With Three Elements Glass Lenses And Adapted Linos 10x Beam Expander
- Sinner Cypreus II XL Gold Plated 24k 465nm 4200 mW Peak With Three Elements Glass Lenses
- CDBEAM Blue Balista 467nm 5088mW Optical Corrected 8 Lenses System
- Mrcrouse Zaser XL II Silver Metallized Paint 520nm 1350mW Peak With Corrective Optics And Linos Beam Expander
- CDBEAM Verde Volcano 520nm 2600 mW Dual Diode Build With PBS, Corrective Optics, Variable Output Power And 10x Variable Magnification Linos Beam Expander
- Laserglow Hercules 600 532nm 650 mW With Adapted 8x Linos beam expander
- Jayrob Aurora Stainless Steel 18650 532nm 195mW Peak 181 mW Average
- Jayrob Aurora Stainless Steel 18650 635nm 284 mW Peak 271 mW Average
- Sci-Fi Lasers Arcane II 635nm Light Gray Metallic Powder Coated 675 mW Peak 645 mW Average With Three Elements Glass Lenses
- Jayzereer C-Mount Red Mag Build 650nm 1600 mW

- Aurora SH-032 Stainless Steel 160 Lumens
- Nitecore TN36UTvn Modded Ultra-Directive 1 MLux !!
- Fenix TK75vnQ Modded Ultra Flood & Throw 14.000 Lumens
- Fire-Foxes FF4 6000 Lumens

- Laserbee 7 Watt Laser Power Meter Ophir Thermopile
Minamoto Kobayashi is online now   Reply With Quote
Old 04-15-2015, 09:04 PM #13
crazyspaz's Avatar
Class 3B Laser
 
Join Date: Jul 2012
Location: IN, United States
Posts: 2,862
Rep Power: 727
crazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond repute
crazyspaz crazyspaz is online now
Class 3B Laser
crazyspaz's Avatar
 
Join Date: Jul 2012
Location: IN, United States
Posts: 2,862
Rep Power: 727
crazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond repute
Default Re: Exact frequency range for a DPSS 532 nm and a 445 nm lasers.

532 will always be 532. Your 445's won't dip below 440, and certainly won't go above 460 (based off the 21nm bandwidth you mentioned). Why do you need such exact ranges? I can't imagine you buying a few lenses coated with such a narrow band AR coating- they would be outrageously expensive.
crazyspaz is online now   Reply With Quote
Old 04-15-2015, 09:11 PM #14
Minamoto Kobayashi's Avatar
Class 2 Laser
 
Join Date: Aug 2010
Location: Padova - Italy
Posts: 391
Rep Power: 1353
Minamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond repute
Send a message via Skype™ to Minamoto Kobayashi
Minamoto Kobayashi Minamoto Kobayashi is online now
Class 2 Laser
Minamoto Kobayashi's Avatar
 
Join Date: Aug 2010
Location: Padova - Italy
Posts: 391
Rep Power: 1353
Minamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond repute
Send a message via Skype™ to Minamoto Kobayashi
Default Re: Exact frequency range for a DPSS 532 nm and a 445 nm lasers.

Hi.
The major cost is not the coating (stretch or narrow) ... the big cost is to build two new lenses!
I already tried to decoat and recoat the old lenses, but the result was not so good, because the resultant power loss was much bigger than the original coating.
__________________
- Sinner Cypreus II 18650 405nm 1000 mW
- Jayrob Aurora Stainless Steel 18650 445nm 891 mW Average 950 mW Peak
- Jayrob Frankenstein 445nm 2875 mW Average 3108 mW Peak With Modified Recoated Laserglow 10x Beam Expander
- Jetlaser PL-E Pro Focusable 445 nm 4000 mW Peak 3500 mW Average With Jetlaser 10x Beam Expander
- Mrcrouse Zaser Black Anodized Custom Head/Pill 445 nm 4970 mW Peak 4670 mW Average With Laserglow Modified Recoated 10x Beam Expander
- Sinner Cypreus IIIb 450nm 4757mW With Three Elements Glass Lenses And Adapted Linos 10x Beam Expander
- Sinner Cypreus II XL Gold Plated 24k 465nm 4200 mW Peak With Three Elements Glass Lenses
- CDBEAM Blue Balista 467nm 5088mW Optical Corrected 8 Lenses System
- Mrcrouse Zaser XL II Silver Metallized Paint 520nm 1350mW Peak With Corrective Optics And Linos Beam Expander
- CDBEAM Verde Volcano 520nm 2600 mW Dual Diode Build With PBS, Corrective Optics, Variable Output Power And 10x Variable Magnification Linos Beam Expander
- Laserglow Hercules 600 532nm 650 mW With Adapted 8x Linos beam expander
- Jayrob Aurora Stainless Steel 18650 532nm 195mW Peak 181 mW Average
- Jayrob Aurora Stainless Steel 18650 635nm 284 mW Peak 271 mW Average
- Sci-Fi Lasers Arcane II 635nm Light Gray Metallic Powder Coated 675 mW Peak 645 mW Average With Three Elements Glass Lenses
- Jayzereer C-Mount Red Mag Build 650nm 1600 mW

- Aurora SH-032 Stainless Steel 160 Lumens
- Nitecore TN36UTvn Modded Ultra-Directive 1 MLux !!
- Fenix TK75vnQ Modded Ultra Flood & Throw 14.000 Lumens
- Fire-Foxes FF4 6000 Lumens

- Laserbee 7 Watt Laser Power Meter Ophir Thermopile

Last edited by Minamoto Kobayashi; 04-15-2015 at 09:12 PM.
Minamoto Kobayashi is online now   Reply With Quote
Old 04-16-2015, 12:51 PM #15
Class 2 Laser
 
Join Date: Jan 2011
Posts: 357
Rep Power: 694
lazeristasUVISIR has a reputation beyond reputelazeristasUVISIR has a reputation beyond reputelazeristasUVISIR has a reputation beyond reputelazeristasUVISIR has a reputation beyond reputelazeristasUVISIR has a reputation beyond reputelazeristasUVISIR has a reputation beyond reputelazeristasUVISIR has a reputation beyond reputelazeristasUVISIR has a reputation beyond reputelazeristasUVISIR has a reputation beyond reputelazeristasUVISIR has a reputation beyond reputelazeristasUVISIR has a reputation beyond repute
lazeristasUVISIR lazeristasUVISIR is offline
Class 2 Laser
 
Join Date: Jan 2011
Posts: 357
Rep Power: 694
lazeristasUVISIR has a reputation beyond reputelazeristasUVISIR has a reputation beyond reputelazeristasUVISIR has a reputation beyond reputelazeristasUVISIR has a reputation beyond reputelazeristasUVISIR has a reputation beyond reputelazeristasUVISIR has a reputation beyond reputelazeristasUVISIR has a reputation beyond reputelazeristasUVISIR has a reputation beyond reputelazeristasUVISIR has a reputation beyond reputelazeristasUVISIR has a reputation beyond reputelazeristasUVISIR has a reputation beyond repute
Default Re: Exact frequency range for a DPSS 532 nm and a 445 nm lasers.

Quote:
Originally Posted by Minamoto Kobayashi View Post
Plano Convex Lens:
base curve outer (convex): +9.00 diopters
base curve inner (concave): -1.25 diopters
dioptic power: +10.65
thickness at the center: 4.15 mm
diameter: 30 mm

Convex lens:
base curve outer (convex): +12.35 diopters
base curve inner (concave): -6.5 diopters
dioptic power: +6.75
thickness at the center: 3.3 mm
diameter: 30 mm
This is not a common way to describe lenses for lasers. Most often surfaces radii are dimensioned in mm, and focal length in mm (not dioptic power)

The first lens is confusing too
Plano Convex
but then you write about convex and concave.

As both lenses are +, you'll build a Keplerian type expander. Any reasons why? The Galilean type is shorter at least.
__________________
L is for Lasers, and they are good for me.
lazeristasUVISIR is offline   Reply With Quote
Old 04-16-2015, 01:46 PM #16
Minamoto Kobayashi's Avatar
Class 2 Laser
 
Join Date: Aug 2010
Location: Padova - Italy
Posts: 391
Rep Power: 1353
Minamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond repute
Send a message via Skype™ to Minamoto Kobayashi
Minamoto Kobayashi Minamoto Kobayashi is online now
Class 2 Laser
Minamoto Kobayashi's Avatar
 
Join Date: Aug 2010
Location: Padova - Italy
Posts: 391
Rep Power: 1353
Minamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond repute
Send a message via Skype™ to Minamoto Kobayashi
Default Re: Exact frequency range for a DPSS 532 nm and a 445 nm lasers.

Hi.
Those parameters were found by a company here in Italy. Perhaps in Italy there is another way to measure parameters.
The lenses were unmounted from Laserglow Beam Expander, and this expander is very short. It uses also another very small input lens.
__________________
- Sinner Cypreus II 18650 405nm 1000 mW
- Jayrob Aurora Stainless Steel 18650 445nm 891 mW Average 950 mW Peak
- Jayrob Frankenstein 445nm 2875 mW Average 3108 mW Peak With Modified Recoated Laserglow 10x Beam Expander
- Jetlaser PL-E Pro Focusable 445 nm 4000 mW Peak 3500 mW Average With Jetlaser 10x Beam Expander
- Mrcrouse Zaser Black Anodized Custom Head/Pill 445 nm 4970 mW Peak 4670 mW Average With Laserglow Modified Recoated 10x Beam Expander
- Sinner Cypreus IIIb 450nm 4757mW With Three Elements Glass Lenses And Adapted Linos 10x Beam Expander
- Sinner Cypreus II XL Gold Plated 24k 465nm 4200 mW Peak With Three Elements Glass Lenses
- CDBEAM Blue Balista 467nm 5088mW Optical Corrected 8 Lenses System
- Mrcrouse Zaser XL II Silver Metallized Paint 520nm 1350mW Peak With Corrective Optics And Linos Beam Expander
- CDBEAM Verde Volcano 520nm 2600 mW Dual Diode Build With PBS, Corrective Optics, Variable Output Power And 10x Variable Magnification Linos Beam Expander
- Laserglow Hercules 600 532nm 650 mW With Adapted 8x Linos beam expander
- Jayrob Aurora Stainless Steel 18650 532nm 195mW Peak 181 mW Average
- Jayrob Aurora Stainless Steel 18650 635nm 284 mW Peak 271 mW Average
- Sci-Fi Lasers Arcane II 635nm Light Gray Metallic Powder Coated 675 mW Peak 645 mW Average With Three Elements Glass Lenses
- Jayzereer C-Mount Red Mag Build 650nm 1600 mW

- Aurora SH-032 Stainless Steel 160 Lumens
- Nitecore TN36UTvn Modded Ultra-Directive 1 MLux !!
- Fenix TK75vnQ Modded Ultra Flood & Throw 14.000 Lumens
- Fire-Foxes FF4 6000 Lumens

- Laserbee 7 Watt Laser Power Meter Ophir Thermopile
Minamoto Kobayashi is online now   Reply With Quote
Reply





Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On











Loading












Privacy Policy | Advertising Disclaimer | Terms of Use


 


All times are GMT. The time now is 08:24 PM.


Powered by: vBulletin
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO
Privacy Policy | Advertising Disclaimer | Terms of Use
Copyright (C) 2017 Laser Pointer Forums, LLC