Old 10-18-2016, 01:43 PM #17
DashApple's Avatar
Class 3R Laser
 
Join Date: Jan 2009
Posts: 1,305
Rep Power: 1345
DashApple has a reputation beyond reputeDashApple has a reputation beyond reputeDashApple has a reputation beyond reputeDashApple has a reputation beyond reputeDashApple has a reputation beyond reputeDashApple has a reputation beyond reputeDashApple has a reputation beyond reputeDashApple has a reputation beyond reputeDashApple has a reputation beyond reputeDashApple has a reputation beyond reputeDashApple has a reputation beyond repute
DashApple DashApple is online now
Class 3R Laser
DashApple's Avatar
 
Join Date: Jan 2009
Posts: 1,305
Rep Power: 1345
DashApple has a reputation beyond reputeDashApple has a reputation beyond reputeDashApple has a reputation beyond reputeDashApple has a reputation beyond reputeDashApple has a reputation beyond reputeDashApple has a reputation beyond reputeDashApple has a reputation beyond reputeDashApple has a reputation beyond reputeDashApple has a reputation beyond reputeDashApple has a reputation beyond reputeDashApple has a reputation beyond repute
Default Re: Short large diameter ND: YAG Crystal with Brewster Angle?

Quote:
Originally Posted by RedCowboy View Post
I have no idea, usually an 808nm pumped ND-YAG is frequency doubled with a YV04 to make 532nm, I have not seen Brewster's angle used except in gas lasers such as argon. I have not worked with any ruby lasers. EDIT I meant helium neon, lol.

I assume it was to strip off polarized light using the angle as the output, but that's just a wild guess.
EDIT : I take that back, I think it's pumped through that angle.
YVO4 isn't a SHG crystal , KTP is used to perform the 1064nm to 532nm SHG in most cases or LBO sometimes .

Nd:Yag & Nd:Yvo4 both lase at 1064nm hence why they are both seen in 532nm systems


__________________
Now the tide is rising
And Iím staring at the wake
I get this feeling inside and
I think that it might be too late
Thereís nothing left to confide in
The only thing concrete is this weight
So Iím stuck here deciding
How much more before I break

My heart is sinking like a stone
In an ocean of itís own
You said Iíd never be alone
I guess I shouldíve known

Last edited by DashApple; 10-18-2016 at 01:44 PM.
DashApple is online now   Reply With Quote








Old 10-18-2016, 04:35 PM #18
Alaskan's Avatar
Class 4 Laser
 
Join Date: Jan 2014
Location: Southwest Asia
Posts: 5,913
Rep Power: 6917
Alaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond repute
Alaskan Alaskan is offline
Class 4 Laser
Alaskan's Avatar
 
Join Date: Jan 2014
Location: Southwest Asia
Posts: 5,913
Rep Power: 6917
Alaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond repute
Default Re: Short Length Large Diameter ND: YAG Crystal - What for?

Thought I'd add this non related (to this crystal) YT video of a 1064nm to 532nm pulsed YAG tattoo removal machine, only 1500 dollars and up to 10 Hz reputation at 8ns and 2000 mJ, or so claimed. If so, that's many millions of watts of peak power in a 8ns pulse.

http://www.ophiropt.com/laser-measur...wer-calculator


__________________

The forum costs more to run than donations received, if you wish to help click this link: http://laserpointerforums.com/donations.htm

Laser Safety: http://www.laserpointersafety.com/index.html

Sam's Laser FAQ: Sam's Laser FAQ: Welcome Page

RHD's Relative Perceived Brightness Calculator. Compare brightness @nm: http://lsrtools.1apps.com/relativebrightness

To shorten my signature I have moved most of my laser related web links to this forum page, the second post in that thread shows most of my builds... Alaskan's Laser Links: http://laserpointerforums.com/f44/al...ml#post1449395


Sincerely investigate any of these three short quotes as new concepts and you've taken your first step into a larger world:

"I regard consciousness as fundamental. I regard matter as derivative from consciousness..." - Max Planck. "Everything we call real is made of things that cannot be regarded as real" - Neils Bohr. "What we call physical things and events do not exist independently of subjective experience..." - Deepak Chopra.

Each of these three rabbit holes go deep, ending up in the same place.

Useless troll fighting.

Last edited by Alaskan; 10-18-2016 at 05:19 PM. Reason: added power
Alaskan is offline   Reply With Quote
Old 10-18-2016, 05:10 PM #19
RedCowboy's Avatar
Class 3B Laser
 
Join Date: Jul 2015
Location: Suburbs of Atlanta Georgia
Posts: 4,194
Rep Power: 6948
RedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond repute
RedCowboy RedCowboy is online now
Class 3B Laser
RedCowboy's Avatar
 
Join Date: Jul 2015
Location: Suburbs of Atlanta Georgia
Posts: 4,194
Rep Power: 6948
RedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond repute
Default Re: Short large diameter ND: YAG Crystal with Brewster Angle?

Quote:
Originally Posted by DashApple View Post
YVO4 isn't a SHG crystal , KTP is used to perform the 1064nm to 532nm SHG in most cases or LBO sometimes .

Nd:Yag & Nd:Yvo4 both lase at 1064nm hence why they are both seen in 532nm systems
Yes, I was up late and not thinking, I knew ND:YV04 and KTP are bonded in many of the little 532nm modules.
Neodymium doped yttrium orthovanadate is pumped by the 808nm diode to emit 1064nm and the KTP doubles that to 532nm.
__________________
You can not put freedom in a bag.
It is in fact an abstract concept.
Yet it is the single most valuable thing anyone has ever had.
RedCowboy is online now   Reply With Quote
Old 10-18-2016, 05:29 PM #20
Alaskan's Avatar
Class 4 Laser
 
Join Date: Jan 2014
Location: Southwest Asia
Posts: 5,913
Rep Power: 6917
Alaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond repute
Alaskan Alaskan is offline
Class 4 Laser
Alaskan's Avatar
 
Join Date: Jan 2014
Location: Southwest Asia
Posts: 5,913
Rep Power: 6917
Alaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond repute
Default Re: Short Length Large Diameter ND: YAG Crystal - What for?

Don't need a YV04 with a 1064nm YAG to make 532nm, just a non-linear KTP or LBO crystal, ain't that nice
__________________

The forum costs more to run than donations received, if you wish to help click this link: http://laserpointerforums.com/donations.htm

Laser Safety: http://www.laserpointersafety.com/index.html

Sam's Laser FAQ: Sam's Laser FAQ: Welcome Page

RHD's Relative Perceived Brightness Calculator. Compare brightness @nm: http://lsrtools.1apps.com/relativebrightness

To shorten my signature I have moved most of my laser related web links to this forum page, the second post in that thread shows most of my builds... Alaskan's Laser Links: http://laserpointerforums.com/f44/al...ml#post1449395


Sincerely investigate any of these three short quotes as new concepts and you've taken your first step into a larger world:

"I regard consciousness as fundamental. I regard matter as derivative from consciousness..." - Max Planck. "Everything we call real is made of things that cannot be regarded as real" - Neils Bohr. "What we call physical things and events do not exist independently of subjective experience..." - Deepak Chopra.

Each of these three rabbit holes go deep, ending up in the same place.

Useless troll fighting.
Alaskan is offline   Reply With Quote
Old 10-18-2016, 05:49 PM #21
RedCowboy's Avatar
Class 3B Laser
 
Join Date: Jul 2015
Location: Suburbs of Atlanta Georgia
Posts: 4,194
Rep Power: 6948
RedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond repute
RedCowboy RedCowboy is online now
Class 3B Laser
RedCowboy's Avatar
 
Join Date: Jul 2015
Location: Suburbs of Atlanta Georgia
Posts: 4,194
Rep Power: 6948
RedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond repute
Default Re: Short Length Large Diameter ND: YAG Crystal - What for?

It's very interesting, the real question is how practical is any of it, I know higher powers and better beam quality can be had, albeit temp sensitive and prone to mode hopping.

Also there's portability and power supply, I really would like to work with some pre owned/de commissioned fiber lasers.

There could be undiscovered jewels and I am looking for them, but bigger direct diode sure will make things easier.
__________________
You can not put freedom in a bag.
It is in fact an abstract concept.
Yet it is the single most valuable thing anyone has ever had.
RedCowboy is online now   Reply With Quote
Old 10-18-2016, 06:08 PM #22
ultimatekaiser's Avatar
Class 3B Laser
 
Join Date: Mar 2013
Location: Colorado, USA
Posts: 2,602
Rep Power: 2628
ultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond repute
Send a message via Skype™ to ultimatekaiser
ultimatekaiser ultimatekaiser is online now
Class 3B Laser
ultimatekaiser's Avatar
 
Join Date: Mar 2013
Location: Colorado, USA
Posts: 2,602
Rep Power: 2628
ultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond repute
Send a message via Skype™ to ultimatekaiser
Default Re: Short Length Large Diameter ND: YAG Crystal - What for?

Quote:
Originally Posted by RedCowboy View Post
It's very interesting, the real question is how practical is any of it, I know higher powers and better beam quality can be had, albeit temp sensitive and prone to mode hopping.

Also there's portability and power supply, I really would like to work with some pre owned/de commissioned fiber lasers.

There could be undiscovered jewels and I am looking for them, but bigger direct diode sure will make things easier.
Ummmmm...

Very practical, used a lot. Though expensive. YAG is not temperature sensitive at all. The lasing medium doesn't care what temperature it is, just that it is kept reasonably cool and constant. If you were doubling it, then yes you need the doubler at the right temp, and held constant too, but so long as that's being held constant it isn't going to be doing any hopping, especially if the cavity is well designed.

As for portability, it's nice, but not generally a requirement for lab lasers... In fact it's often preferred for them to be large on purpose because it makes them easier to work on. Ti:sapphire lasers for example often fill entire tables and work benches. We rarely have to move them so it's not usually a concern except if it were being implemented into something else.
__________________
325nm: Omni 2056-M-A01 HeCd
375nm: Melles Griot RCS-007

405nm: Melles Griot RCS
430nm: Coherent D3 430-10
441.6nm: Omnichrome 2056-M-A01/4074-P-A03 HeCd laser
457.9nm: Uniphase 2214-40MLA Argon Ion Line

472nm Omni-643RYB Whitelight Line
473nm: CNI MGL-473-100, CNI GLP-473
476.5nm: Uniphase 2214-40MLA Argon Ion Line

483nm Omni-643RYB Whitelight Line
488nm: Uniphase 2214-40MLA Argon Ion Line, Spectra Physics >20mW Cyan DECSL Laser

496.5nm: Uniphase 2214-40MLA Argon Ion Line
501.7: Uniphase 2214-40MLA Argon Ion Line
514.5nm: Uniphase 2214-40MLA Argon Ion Line
520nm: Trustfire A8 Custom

532nm: CNI MGL-F-3W, LG Hercules-325
543.5nm: 05-LGR-193 Melles Griot HeNe 3.8mW
Melles Griot LGB-563 HeNe

561nm: Melles Griot 85-YCA-015, Coherent Sapphire 561-20
568nm: Omni-643RYB Whitelight Line

577nm
583.8nm
586.2nm
588.6nm: CNI PGL-M-80

591nm
593.5nm CNI MGL-H-50 Lab Laser
594.1nm: Coherent 31-2230-000 (4.5mW)

604.6nm: LOR-150 HeNe line
609nm REO LHYR-250M HeNe line
611.8nm: Melles Griot LOR-150 HeNe (5mW), LOR-006 HeNe (0.5mW)

632.8nm: Spectra Physics Model-127 (>35mW), Model-124B, Model-120, Model-117, others
Melles Griot LHB-580, LHB-190, WHR-570

641nm: Melles Griot RCS
647nm: Omni-643RYB Whitelight Line
659.3nm: Laser Quantum IGNIS 0.5W

671nm: CNI PGL-III-C-100
676nm: Omni-643RYB Whitelight Line
690nm: custom diode laser
694nm: Portable Q-switched Ruby Laser

1152.6nm: SP-120 HeNe alt. mirrors
1153nm: SP-120 alt. mirrors
1523.5nm: Melles Griot LIR-151 HeNe
3391nm: SP-124 alt. mirrors
ultimatekaiser is online now   Reply With Quote
Old 10-18-2016, 06:13 PM #23
Alaskan's Avatar
Class 4 Laser
 
Join Date: Jan 2014
Location: Southwest Asia
Posts: 5,913
Rep Power: 6917
Alaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond repute
Alaskan Alaskan is offline
Class 4 Laser
Alaskan's Avatar
 
Join Date: Jan 2014
Location: Southwest Asia
Posts: 5,913
Rep Power: 6917
Alaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond repute
Default Re: Short Length Large Diameter ND: YAG Crystal - What for?

For us, YAG lasers, as toys, not so practical compared to the portability and higher safety levels of CW laser pointers due to the lower power and constant visible spectrum outputs, but as working lasers that's a different story, very solid technology. For myself, YAG lasers are just another branch of the technology I am interested in, but you won't see me spending that kind of money to convert one of these new units into a hobby machine. I already bought some ND:YAG eye surgery lasers on eBay I want to get to someday with crystals to go with them, although the two I bought are not much different from the well known surplus tank distance ranging SSY1 systems in power or size, using a tiny 3mm X 52.3mm YAG rod.

Coherent Pulsed ND YAG Laser Module Q Switched Rod Lamp Trigger | eBay
__________________

The forum costs more to run than donations received, if you wish to help click this link: http://laserpointerforums.com/donations.htm

Laser Safety: http://www.laserpointersafety.com/index.html

Sam's Laser FAQ: Sam's Laser FAQ: Welcome Page

RHD's Relative Perceived Brightness Calculator. Compare brightness @nm: http://lsrtools.1apps.com/relativebrightness

To shorten my signature I have moved most of my laser related web links to this forum page, the second post in that thread shows most of my builds... Alaskan's Laser Links: http://laserpointerforums.com/f44/al...ml#post1449395


Sincerely investigate any of these three short quotes as new concepts and you've taken your first step into a larger world:

"I regard consciousness as fundamental. I regard matter as derivative from consciousness..." - Max Planck. "Everything we call real is made of things that cannot be regarded as real" - Neils Bohr. "What we call physical things and events do not exist independently of subjective experience..." - Deepak Chopra.

Each of these three rabbit holes go deep, ending up in the same place.

Useless troll fighting.

Last edited by Alaskan; 10-18-2016 at 06:43 PM. Reason: Distance, not distant
Alaskan is offline   Reply With Quote
Old 10-18-2016, 06:34 PM #24
ultimatekaiser's Avatar
Class 3B Laser
 
Join Date: Mar 2013
Location: Colorado, USA
Posts: 2,602
Rep Power: 2628
ultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond repute
Send a message via Skype™ to ultimatekaiser
ultimatekaiser ultimatekaiser is online now
Class 3B Laser
ultimatekaiser's Avatar
 
Join Date: Mar 2013
Location: Colorado, USA
Posts: 2,602
Rep Power: 2628
ultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond repute
Send a message via Skype™ to ultimatekaiser
Default Re: Short Length Large Diameter ND: YAG Crystal - What for?

Well yeah, it's not practical in a handheld, it wasn't meant to be.

Yeah I've seen those eye surgery systems for capsulotomy and such. They're just simple little things relatively speaking. Isn't it amazing how something so simple can be so expensive?
__________________
325nm: Omni 2056-M-A01 HeCd
375nm: Melles Griot RCS-007

405nm: Melles Griot RCS
430nm: Coherent D3 430-10
441.6nm: Omnichrome 2056-M-A01/4074-P-A03 HeCd laser
457.9nm: Uniphase 2214-40MLA Argon Ion Line

472nm Omni-643RYB Whitelight Line
473nm: CNI MGL-473-100, CNI GLP-473
476.5nm: Uniphase 2214-40MLA Argon Ion Line

483nm Omni-643RYB Whitelight Line
488nm: Uniphase 2214-40MLA Argon Ion Line, Spectra Physics >20mW Cyan DECSL Laser

496.5nm: Uniphase 2214-40MLA Argon Ion Line
501.7: Uniphase 2214-40MLA Argon Ion Line
514.5nm: Uniphase 2214-40MLA Argon Ion Line
520nm: Trustfire A8 Custom

532nm: CNI MGL-F-3W, LG Hercules-325
543.5nm: 05-LGR-193 Melles Griot HeNe 3.8mW
Melles Griot LGB-563 HeNe

561nm: Melles Griot 85-YCA-015, Coherent Sapphire 561-20
568nm: Omni-643RYB Whitelight Line

577nm
583.8nm
586.2nm
588.6nm: CNI PGL-M-80

591nm
593.5nm CNI MGL-H-50 Lab Laser
594.1nm: Coherent 31-2230-000 (4.5mW)

604.6nm: LOR-150 HeNe line
609nm REO LHYR-250M HeNe line
611.8nm: Melles Griot LOR-150 HeNe (5mW), LOR-006 HeNe (0.5mW)

632.8nm: Spectra Physics Model-127 (>35mW), Model-124B, Model-120, Model-117, others
Melles Griot LHB-580, LHB-190, WHR-570

641nm: Melles Griot RCS
647nm: Omni-643RYB Whitelight Line
659.3nm: Laser Quantum IGNIS 0.5W

671nm: CNI PGL-III-C-100
676nm: Omni-643RYB Whitelight Line
690nm: custom diode laser
694nm: Portable Q-switched Ruby Laser

1152.6nm: SP-120 HeNe alt. mirrors
1153nm: SP-120 alt. mirrors
1523.5nm: Melles Griot LIR-151 HeNe
3391nm: SP-124 alt. mirrors
ultimatekaiser is online now   Reply With Quote
Old 10-18-2016, 06:39 PM #25
Alaskan's Avatar
Class 4 Laser
 
Join Date: Jan 2014
Location: Southwest Asia
Posts: 5,913
Rep Power: 6917
Alaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond repute
Alaskan Alaskan is offline
Class 4 Laser
Alaskan's Avatar
 
Join Date: Jan 2014
Location: Southwest Asia
Posts: 5,913
Rep Power: 6917
Alaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond repute
Default Re: Short Length Large Diameter ND: YAG Crystal - What for?

Got some spare rods for that little eye laser too. Should be able to push these up to at least 300,000 watts peak power/2 mJ without going beyond their working rating, but not much faster than 3 Hz without periods of cool off time.. At 1 Hz, hoping I can do 1,000,000 peak power shots, but I don't know if a rod that small without water cooling, as it was designed for, can be pushed to over 6 mJ to produce that much power. That might be too much but since I have a bunch of spare rods, I can experiment to find out but the passive Q-switch glass might fail first, that would destroy its ability for high peak power short duration pulses, not sure I want to try that without finding replacement glass first.

Since these units are low repetition rate without water cooling, they could be built into a large hand held device and run off of batteries, but what for? No reason other than perhaps flashing across great distances with IR, at 1064nm most cameras are not very sensitive to that long of a wavelength, but then again how sensitive does a camera need to be to pick up a high power pulse, even if at 1.06 um the camera is only 1% as sensitive compared to 500nm, for example, several KW of coherent 1064nm ought to be picked up as a very bright flash, as long as the camera can pick up such a short duration pulse; 6ns.

Edit: Expensive is right, the manufacturer was selling these for outrageous amounts of money, but then, doctors charge that much too so they get their money back. UltimateK, do you happen to know what the relationship of divergence is for YAG rods if they are thin, or fairly large diameter, which way it goes, gets worse or better if a larger diameter rod?
__________________

The forum costs more to run than donations received, if you wish to help click this link: http://laserpointerforums.com/donations.htm

Laser Safety: http://www.laserpointersafety.com/index.html

Sam's Laser FAQ: Sam's Laser FAQ: Welcome Page

RHD's Relative Perceived Brightness Calculator. Compare brightness @nm: http://lsrtools.1apps.com/relativebrightness

To shorten my signature I have moved most of my laser related web links to this forum page, the second post in that thread shows most of my builds... Alaskan's Laser Links: http://laserpointerforums.com/f44/al...ml#post1449395


Sincerely investigate any of these three short quotes as new concepts and you've taken your first step into a larger world:

"I regard consciousness as fundamental. I regard matter as derivative from consciousness..." - Max Planck. "Everything we call real is made of things that cannot be regarded as real" - Neils Bohr. "What we call physical things and events do not exist independently of subjective experience..." - Deepak Chopra.

Each of these three rabbit holes go deep, ending up in the same place.

Useless troll fighting.

Last edited by Alaskan; 10-18-2016 at 07:24 PM. Reason: Added more
Alaskan is offline   Reply With Quote
Old 10-18-2016, 09:30 PM #26
RedCowboy's Avatar
Class 3B Laser
 
Join Date: Jul 2015
Location: Suburbs of Atlanta Georgia
Posts: 4,194
Rep Power: 6948
RedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond repute
RedCowboy RedCowboy is online now
Class 3B Laser
RedCowboy's Avatar
 
Join Date: Jul 2015
Location: Suburbs of Atlanta Georgia
Posts: 4,194
Rep Power: 6948
RedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond repute
Default Re: Short Length Large Diameter ND: YAG Crystal - What for?

I wonder how efficient the flash lamps are and if surrounding the rod with super bright strings of tiny smd led's could do away with the need for a reflective cavity, there would also be less waste heat as the led's are more efficient, the trick will be the peak pulse power, but with many thin strings sharing the workload a high pulse rate could be achieved.
Maybe the surface of the led's could be a pass reflect coating.

Is this video BS?
__________________
You can not put freedom in a bag.
It is in fact an abstract concept.
Yet it is the single most valuable thing anyone has ever had.

Last edited by RedCowboy; 10-18-2016 at 09:36 PM.
RedCowboy is online now   Reply With Quote
Old 10-18-2016, 10:19 PM #27
diachi's Avatar
Class 4 Laser
 
Join Date: Feb 2008
Location: Yellowknife, NT, Canada
Posts: 7,137
Rep Power: 7432
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: 7,137
Rep Power: 7432
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: Short Length Large Diameter ND: YAG Crystal - What for?

Quote:
Originally Posted by RedCowboy View Post
I wonder how efficient the flash lamps are and if surrounding the rod with super bright strings of tiny smd led's could do away with the need for a reflective cavity, there would also be less waste heat as the led's are more efficient, the trick will be the peak pulse power, but with many thin strings sharing the workload a high pulse rate could be achieved.
Maybe the surface of the led's could be a pass reflect coating.

Is this video BS?

Yeah ... wouldn't use LEDs, you won't see good results, even with IR LEDs with center wavelength close to the absorption of Nd:YAG. If you want to go that route then LDs are the way to go - much higher optical powers, much more effiecient as all of that power is in one narrow band, centered around the narrow absorption band of Nd:YAG at ~808nm. LEDs are much much wider and as such most of the already lower output won't be absorbed by the rod.

Flash/arc lamps can produce immense amounts of optical power, of which a major portion is right around 808nm. LEDs while more efficient, can't come close.

Spectral distribution for a 300W xenon arc lamp:



Not sure about your video.
__________________


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 | In Transit
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; 10-18-2016 at 10:20 PM.
diachi is online now   Reply With Quote
Old 10-19-2016, 12:14 AM #28
paul1598419's Avatar
Class 3B Laser
 
Join Date: Sep 2013
Location: Washington State
Posts: 2,748
Rep Power: 4636
paul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond repute
paul1598419 paul1598419 is online now
Class 3B Laser
paul1598419's Avatar
 
Join Date: Sep 2013
Location: Washington State
Posts: 2,748
Rep Power: 4636
paul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond repute
Default Re: Short Length Large Diameter ND: YAG Crystal - What for?

Quote:
Originally Posted by ultimatekaiser View Post
There's lots of different kinds of ring lasers. All are very complex, and some have very creative construction. I have even seen some that use the crystal itself as the entire cavity, referred to as an NPRO. The crystal is shaped such that it acts like a turnaround prism of sorts and uses the internal surfaces as standing wave forming mirrors, and the forward face as both a focus and the OC and is very interesting. You can use it linearly without worrying about the curve, just use a guide laser to align it. it'll not affect much-your cavity just wont be straight physically. I'd also verify that (likely) both sides are planar. (edit: both are referenced in the article you linked)

The coherence is a measure of how far the photons can travel before having a small but significant change in frequency/wavelength. It's very important for certain applications like holography, where the wavelength cannot change too much or you can't get the required interference. Most people here wouldn't care, because they don't use it, and it wouldn't change enough to be significant to the eye as it travels, but for the sake of scientific purposes, it's a very important concept. Diodes generally have a crap beam quality, not just in terms of divergence, but also coherence. Part of why good lab lasers are so expensive. A cheap 5mW laser might be a few dollars, and a good generic, temp controlled lab laser anywhere from a few hundred to maybe a thousand or so, a good SLM would be a several thousand minimum. by eye they all would look similar, but the SLM one is far more useful in almost every way compared to the former two. you can do dozens more experiments with a coherent compass at 10mW than you can with any number of other greens.
I made this same point in another thread awhile back. It's nice to see it made again, here. The coherence length of lasers used for holography is one of the most important concepts when trying to make a quality reflection hologram. I'm aware of laser with coherence lengths out to 150 meters, but mine are limited to between 20 and 100 cm. Still good enough to make a quality reflection hologram.
__________________
405nm Laser Pointer 45mW
405nm C11 700mW
405nm Laser Shack Pointer 80mW
445nm 1.75 watts SkyRay Gifted
445nm 3 watts MS-SSW-II
445nm 2.2 watts Nichia MS Envy

445nm 2 watt SMP Copper Host
488nm Uniphase #2201-20SLAT argon laser head and power supply >40mW
532nm 200mW thermostatically Fan Cooled (Besram) >230mW
532nm 189mW pocket lab laser
532nm lasers X6 100mW-200mW
532nm lasers X4 75mW- 140mW
632.8nm P210 New Laser Tube 0.57mW Melles Griot 05-LMP-827-037 PSU New
632.8nm Spectra- Physics He- Ne #102-2 4mW heads X2 and #236 power supply
632.8nm PMS He-Ne # 201P/ LPS-115 2mW
632.8nm Siemens HeNe LGK7630S 7.6mW
635nm 1 watt Cyprus II
635nm 1 watt SMP Copper host
635nm 5mW pointer
635nm 100mW pointer
650nm 65mW pointer
650nm 380mW 501B
808nm 1+W infrared laser
infrared video camera for collimating IR lasers
Ocean Optics USB2000 Spectrometer
Scientech Vector S310 with AC2500 10 Watt LPM
LaserBee II 3.2 Watt LPM
Radiant X4 3.7 Watt LPM
Eisco Scientific Spectroscope 400nm- 700nm

Last edited by paul1598419; 10-19-2016 at 12:15 AM.
paul1598419 is online now   Reply With Quote
Old 10-19-2016, 03:13 AM #29
RedCowboy's Avatar
Class 3B Laser
 
Join Date: Jul 2015
Location: Suburbs of Atlanta Georgia
Posts: 4,194
Rep Power: 6948
RedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond repute
RedCowboy RedCowboy is online now
Class 3B Laser
RedCowboy's Avatar
 
Join Date: Jul 2015
Location: Suburbs of Atlanta Georgia
Posts: 4,194
Rep Power: 6948
RedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond repute
Default Re: Short Length Large Diameter ND: YAG Crystal - What for?



-----------------------edit-------------------------

This triangle shaped crystal is interesting.
http://www.stellarnet.us/wp-content/...Nd_triangl.pdf

--------------edit-------------

Wait a minute, looking at these other pics, is this thing cylindrical? That 1st pic posted looks different, is it an optical illusion...yes it is, that 1st pic looked like it was cut across the top but it's just the way it's sitting, the other pics show it better, I don't see how that part could be side pumped as it looks semi transparent around the edges unless via flash lamp, not that I have seen, if it's side pumped I would think it would be by flash lamp and not a LD, but I could be completely wrong.

What threw me was not looking at the other pics to start, just that top pic looked like possibly a Brewster's angle cut across the top and had me thinking it could use a LD but it's just how it was sitting in the pic.
The bottom of the original pic looked like the shadow was the side of the crystal with a reflective circular mark on it, but it's just the shadow and the circles top and bottom are reflected room light.
I thought this was some fancy cut gain medium/resonator with a BA cut across the top, my mistake.



----------------

These pics show what it is much better.





Northrop Grumman ND YAG Laser Crystal 12 5mm x 6 1mm x 4 7mm Angled | eBay

p.s. I have some of those surplus rangefinder rods and lamps but they are buried in a mountain of boxes, they were cheap years ago when I got them, I haven't done anything with them, I don't have the mirrors or anything else, but I suppose a portable unit could be fun, however in order to maintain a high pulse rate that could appear CW as the 100W medical behemoth in photonicinductions video, that would likely take a backpack of battery and capacitors. I also would need to build a control, I would almost rather cannibalize something else that's intact.
Attached Thumbnails
Short Length Large Diameter ND: YAG Crystal - What for?-yabc3z2.jpg  
__________________
You can not put freedom in a bag.
It is in fact an abstract concept.
Yet it is the single most valuable thing anyone has ever had.

Last edited by RedCowboy; 10-19-2016 at 08:34 AM.
RedCowboy is online now   Reply With Quote
Old 10-19-2016, 02:54 PM #30
Alaskan's Avatar
Class 4 Laser
 
Join Date: Jan 2014
Location: Southwest Asia
Posts: 5,913
Rep Power: 6917
Alaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond repute
Alaskan Alaskan is offline
Class 4 Laser
Alaskan's Avatar
 
Join Date: Jan 2014
Location: Southwest Asia
Posts: 5,913
Rep Power: 6917
Alaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond repute
Default Re: Short Length Large Diameter ND: YAG Crystal - What for?

I didn't realize you had thought the crystal was some other shape, didn't put more photographs there due to having the link where you could go look, did, after awhile This seller has a lot of these if someone else is interested, but at this point I might have bought something I won't end up using, unless I can learn more about the application a rod of this size and end angle can be used for. Fortunately I didn't spend much, but I was hoping the larger diameter rod, even if short, might provide lower divergence, perhaps it is the opposite. I will be searching the net to see what I can find in regard to typical power outputs vs diameter and length for ND:YAG rods and to understand the divergence of different diameter rods, if anyone here knows, please chime in.
__________________

The forum costs more to run than donations received, if you wish to help click this link: http://laserpointerforums.com/donations.htm

Laser Safety: http://www.laserpointersafety.com/index.html

Sam's Laser FAQ: Sam's Laser FAQ: Welcome Page

RHD's Relative Perceived Brightness Calculator. Compare brightness @nm: http://lsrtools.1apps.com/relativebrightness

To shorten my signature I have moved most of my laser related web links to this forum page, the second post in that thread shows most of my builds... Alaskan's Laser Links: http://laserpointerforums.com/f44/al...ml#post1449395


Sincerely investigate any of these three short quotes as new concepts and you've taken your first step into a larger world:

"I regard consciousness as fundamental. I regard matter as derivative from consciousness..." - Max Planck. "Everything we call real is made of things that cannot be regarded as real" - Neils Bohr. "What we call physical things and events do not exist independently of subjective experience..." - Deepak Chopra.

Each of these three rabbit holes go deep, ending up in the same place.

Useless troll fighting.
Alaskan is offline   Reply With Quote
Old 10-19-2016, 04:14 PM #31
diachi's Avatar
Class 4 Laser
 
Join Date: Feb 2008
Location: Yellowknife, NT, Canada
Posts: 7,137
Rep Power: 7432
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: 7,137
Rep Power: 7432
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: Short Length Large Diameter ND: YAG Crystal - What for?

Quote:
Originally Posted by Alaskan View Post
I will be searching the net to see what I can find in regard to typical power outputs vs diameter and length for ND:YAG rods and to understand the divergence of different diameter rods, if anyone here knows, please chime in.
Must take into account dopant % too for power.
__________________


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 | In Transit
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 10-19-2016, 06:27 PM #32
ultimatekaiser's Avatar
Class 3B Laser
 
Join Date: Mar 2013
Location: Colorado, USA
Posts: 2,602
Rep Power: 2628
ultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond repute
Send a message via Skype™ to ultimatekaiser
ultimatekaiser ultimatekaiser is online now
Class 3B Laser
ultimatekaiser's Avatar
 
Join Date: Mar 2013
Location: Colorado, USA
Posts: 2,602
Rep Power: 2628
ultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond reputeultimatekaiser has a reputation beyond repute
Send a message via Skype™ to ultimatekaiser
Default Re: Short Length Large Diameter ND: YAG Crystal - What for?

There's a lot of variables determining power. As for divergence and profile-that's all lenses and cavity construction.
__________________
325nm: Omni 2056-M-A01 HeCd
375nm: Melles Griot RCS-007

405nm: Melles Griot RCS
430nm: Coherent D3 430-10
441.6nm: Omnichrome 2056-M-A01/4074-P-A03 HeCd laser
457.9nm: Uniphase 2214-40MLA Argon Ion Line

472nm Omni-643RYB Whitelight Line
473nm: CNI MGL-473-100, CNI GLP-473
476.5nm: Uniphase 2214-40MLA Argon Ion Line

483nm Omni-643RYB Whitelight Line
488nm: Uniphase 2214-40MLA Argon Ion Line, Spectra Physics >20mW Cyan DECSL Laser

496.5nm: Uniphase 2214-40MLA Argon Ion Line
501.7: Uniphase 2214-40MLA Argon Ion Line
514.5nm: Uniphase 2214-40MLA Argon Ion Line
520nm: Trustfire A8 Custom

532nm: CNI MGL-F-3W, LG Hercules-325
543.5nm: 05-LGR-193 Melles Griot HeNe 3.8mW
Melles Griot LGB-563 HeNe

561nm: Melles Griot 85-YCA-015, Coherent Sapphire 561-20
568nm: Omni-643RYB Whitelight Line

577nm
583.8nm
586.2nm
588.6nm: CNI PGL-M-80

591nm
593.5nm CNI MGL-H-50 Lab Laser
594.1nm: Coherent 31-2230-000 (4.5mW)

604.6nm: LOR-150 HeNe line
609nm REO LHYR-250M HeNe line
611.8nm: Melles Griot LOR-150 HeNe (5mW), LOR-006 HeNe (0.5mW)

632.8nm: Spectra Physics Model-127 (>35mW), Model-124B, Model-120, Model-117, others
Melles Griot LHB-580, LHB-190, WHR-570

641nm: Melles Griot RCS
647nm: Omni-643RYB Whitelight Line
659.3nm: Laser Quantum IGNIS 0.5W

671nm: CNI PGL-III-C-100
676nm: Omni-643RYB Whitelight Line
690nm: custom diode laser
694nm: Portable Q-switched Ruby Laser

1152.6nm: SP-120 HeNe alt. mirrors
1153nm: SP-120 alt. mirrors
1523.5nm: Melles Griot LIR-151 HeNe
3391nm: SP-124 alt. mirrors

Last edited by ultimatekaiser; 10-19-2016 at 06:27 PM.
ultimatekaiser 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








Top 50 Laser Pointer Companies - Green Lasers Top 50 Laser Pointer Companies - Blue Lasers Top 50 Laser Pointer Companies - Red Lasers
Top 50 Laser Pointer Companies - Yellow Lasers Top 50 Laser Pointer Companies - Purple Lasers Top 50 Laser Pointer Companies - Orange Lasers
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




Privacy Policy | Advertising Disclaimer | Terms of Use


 


All times are GMT. The time now is 09:17 AM.


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