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. The link will open in a new window for your convenience.








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
Laser Technology Laser Pointer Parts Lasers by Wavelength
Top 10 Laser Pointer Companies Laser Pointer Company Database Visible Beam Laser Pointers


One laser store meets all your needs

























Go Back   Laser Pointer Forums - Discuss Laser Pointers > Lasers > 445nm Lasers



LPF List of Laser Pointer Companies (link opens new window)



Reply
 
LinkBack Thread Tools Display Modes
Old 04-15-2012, 02:03 PM #209
daguin's Avatar
Super Moderator
 
Join Date: Mar 2008
Location: Sunny Southern California
Posts: 16,636
Rep Power: 1432
daguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond repute
daguin daguin is offline
Super Moderator
daguin's Avatar
 
Join Date: Mar 2008
Location: Sunny Southern California
Posts: 16,636
Rep Power: 1432
daguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond repute
Default Re: New 9mm 445 diodes

Quote:
Originally Posted by pullbangdead View Post
Anybody remember my diode microscope pics? I'd like to compare A, M, and 9mm with enough mag to measure ridge width. Any volunteers?
These are headed over to someone to take micro pics

If his suck, (or even if they're good) would you like these shipped to you next?

The purpose of the micros is to try to get a measurement of the ridge and the wires

Peace,
dave


__________________
How To Get Along In and Be Accepted in the Forum

If you got some value out of reading this forum, how about donating $2 to keep it going?
Click Here to donate

Love all, trust a few, do wrong to none.
-William Shakespeare
daguin is offline   Reply With Quote







LPF List of Laser Pointer Companies (link opens new window)







Old 04-15-2012, 06:34 PM #210
tsteele93's Avatar
Class 3R Laser
 
Join Date: Dec 2011
Location: South Cackalackey, USA
Posts: 2,065
Rep Power: 321
tsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond repute
tsteele93 tsteele93 is offline
Class 3R Laser
tsteele93's Avatar
 
Join Date: Dec 2011
Location: South Cackalackey, USA
Posts: 2,065
Rep Power: 321
tsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond repute
Default Re: New 9mm 445 diodes

Quote:
Originally Posted by daguin View Post
These are headed over to someone to take micro pics

If his suck, (or even if they're good) would you like these shipped to you next?

The purpose of the micros is to try to get a measurement of the ridge and the wires

Peace,
dave
Dave,

I will send them out Monday first class - is that ok? Or do you prefer some other shipping/tracking etc?
__________________
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Tom Steele

Why I'm Here

405nm tsteele93 12x build @ 545mW

445nm Survival Laser @ 1.25W - GIFTED
445nm Stainless Steel Monster with H140 diode @1.62A - 2.15W!
450nm rhd single mode @ 190mW

532nm O-like 50 mW pen from Cajun Lasers - small dot, tight beam!
532nm O-like Crown, rated @ 400mW, metered @ ~450mW with AW battery!
532nm O-like Crown rated @ 500mW, not yet tested
532nm RPL-165 @ 204mW
532nm RPL-375 @ 427mW

635nm rhd Lipstick Tube @ ~485+ mW
638nm Fat Boy @ 825mW - custom build

650nm Bolly BL-8006 @ 319mW

Laser Safety and Eye Injury
tsteele93 is offline   Reply With Quote
Old 04-15-2012, 06:58 PM #211
daguin's Avatar
Super Moderator
 
Join Date: Mar 2008
Location: Sunny Southern California
Posts: 16,636
Rep Power: 1432
daguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond repute
daguin daguin is offline
Super Moderator
daguin's Avatar
 
Join Date: Mar 2008
Location: Sunny Southern California
Posts: 16,636
Rep Power: 1432
daguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond repute
Default Re: New 9mm 445 diodes

Quote:
Originally Posted by tsteele93 View Post
Dave,

I will send them out Monday first class - is that ok? Or do you prefer some other shipping/tracking etc?
Monday, via First Class, is fine

Peace,
dave
__________________
How To Get Along In and Be Accepted in the Forum

If you got some value out of reading this forum, how about donating $2 to keep it going?
Click Here to donate

Love all, trust a few, do wrong to none.
-William Shakespeare
daguin is offline   Reply With Quote
Old 04-16-2012, 05:46 PM #212
BShanahan14rulz's Avatar
Class 3B Laser
 
Join Date: Dec 2009
Posts: 3,175
Rep Power: 264
BShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond repute
BShanahan14rulz BShanahan14rulz is offline
Class 3B Laser
BShanahan14rulz's Avatar
 
Join Date: Dec 2009
Posts: 3,175
Rep Power: 264
BShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond repute
Default Re: New 9mm 445 diodes

Interesting that this one actually has a datasheet of what is probably this diode on N's site. It makes the case all the more strong that the previous generation in the 5.6mm package were likely from the same manufacturer, which I think we all assumed anyways.

Here's a vote for PBD to take some fancy macros, although I have to say tsteele really cranked out some good ones

I think it would just be interesting to see the cavity length, if they made any obvious changes to the facet coatings, and just to see such a tiny work of technology
BShanahan14rulz is offline   Reply With Quote
Old 04-16-2012, 06:24 PM #213
jayrob's Avatar
Class 4 Laser
 
Join Date: Sep 2007
Location: Northern CA, U.S. Astrophotography! (Some of my Photos)
Posts: 9,851
Rep Power: 3922
jayrob has a reputation beyond reputejayrob has a reputation beyond reputejayrob has a reputation beyond reputejayrob has a reputation beyond reputejayrob has a reputation beyond reputejayrob has a reputation beyond reputejayrob has a reputation beyond reputejayrob has a reputation beyond reputejayrob has a reputation beyond reputejayrob has a reputation beyond reputejayrob has a reputation beyond repute
jayrob jayrob is offline
Class 4 Laser
jayrob's Avatar
 
Join Date: Sep 2007
Location: Northern CA, U.S. Astrophotography! (Some of my Photos)
Posts: 9,851
Rep Power: 3922
jayrob has a reputation beyond reputejayrob has a reputation beyond reputejayrob has a reputation beyond reputejayrob has a reputation beyond reputejayrob has a reputation beyond reputejayrob has a reputation beyond reputejayrob has a reputation beyond reputejayrob has a reputation beyond reputejayrob has a reputation beyond reputejayrob has a reputation beyond reputejayrob has a reputation beyond repute
Default Re: New 9mm 445 diodes

Wait I missed that...

Is there a known data sheet?

DTR, please post a link in the first post!
__________________
Personal lasers:
(just a few - too many to list) RPL 425, Sypder III Krypton, RPL 35 (473), GLP-473, GLP-593.5, HeNe 632.8,
Many DIY 445, red, blu-ray, green, 635, and 450 builds...


Looking for a DIY kit?


Take a look at some of my more popular kits linked in color...

* FS: 405-G-1 Glass Lens Mod for Blu-ray! 31% increase in power vs AixiZ acrylic!

* FS: New! 1000 Lumen XML-2 Maglite Modification With Voltage Monitor! - Parts or Complete Light! Must see!

* FS: Polished Stainless Steel Green Kit! Easy assembly in minutes!

* FS: Large Maglite Monster Kits! Side Button Forward Clicky! Custom Head Option! Gnarly...


Click here for a list of my build kits! Projects and tutorials too!

jayrob is offline   Reply With Quote
Old 04-16-2012, 06:32 PM #214
Class 1 Laser
 
Join Date: Feb 2008
Posts: 65
Rep Power: 12
andyf97 has a spectacular aura aboutandyf97 has a spectacular aura aboutandyf97 has a spectacular aura about
andyf97 andyf97 is offline
Class 1 Laser
 
Join Date: Feb 2008
Posts: 65
Rep Power: 12
andyf97 has a spectacular aura aboutandyf97 has a spectacular aura aboutandyf97 has a spectacular aura about
Default Re: New 9mm 445 diodes

Its speculation that these are N. Diodes, The fact is nobody really knows for sure even if the diode is 90% visually identical and has the same features. They could be copies or even copy/enhancement manufactured by Joe blogs in china. They could even have the same G-code as N. diodes. In the end it does not matter who made them or if the data sheet is the right one or not. They are cheap, powerful and tough.
andyf97 is offline   Reply With Quote
Old 04-16-2012, 06:59 PM #215
BShanahan14rulz's Avatar
Class 3B Laser
 
Join Date: Dec 2009
Posts: 3,175
Rep Power: 264
BShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond repute
BShanahan14rulz BShanahan14rulz is offline
Class 3B Laser
BShanahan14rulz's Avatar
 
Join Date: Dec 2009
Posts: 3,175
Rep Power: 264
BShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond repute
Default Re: New 9mm 445 diodes

I'm just saying that while it is speculation, we are more confident than before that these are Nichia diodes. I think I worded it strangely...

JayRob, I just looked on Nichia's site and looked at the datasheet for the only high power 440-450nm diode they have, and it is such an oddball compared to all their other marketed offerings.
All of the other ones have a photodiode built into the package. This one does not.
All of the other ones do not have a static protection device. This one does.
Plus, the package size and description now fits.

I'd be flabbergasted if these were "knock-off" diodes. And also amazed that someone could pull off a copy.
BShanahan14rulz is offline   Reply With Quote
Old 04-16-2012, 07:18 PM #216
Class 1 Laser
 
Join Date: Feb 2008
Posts: 65
Rep Power: 12
andyf97 has a spectacular aura aboutandyf97 has a spectacular aura aboutandyf97 has a spectacular aura about
andyf97 andyf97 is offline
Class 1 Laser
 
Join Date: Feb 2008
Posts: 65
Rep Power: 12
andyf97 has a spectacular aura aboutandyf97 has a spectacular aura aboutandyf97 has a spectacular aura about
Default Re: New 9mm 445 diodes

Quote:
Originally Posted by BShanahan14rulz View Post
I'm just saying that while it is speculation, we are more confident than before that these are Nichia diodes. I think I worded it strangely...

JayRob, I just looked on Nichia's site and looked at the datasheet for the only high power 440-450nm diode they have, and it is such an oddball compared to all their other marketed offerings.
All of the other ones have a photodiode built into the package. This one does not.
All of the other ones do not have a static protection device. This one does.
Plus, the package size and description now fits.

I'd be flabbergasted if these were "knock-off" diodes. And also amazed that someone could pull off a copy.
I totally agree but in the end it does not matter.
andyf97 is offline   Reply With Quote
Old 04-16-2012, 07:26 PM #217
pullbangdead's Avatar
Class 3R Laser
 
Join Date: Aug 2007
Posts: 2,045
Rep Power: 238
pullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond repute
pullbangdead pullbangdead is offline
Class 3R Laser
pullbangdead's Avatar
 
Join Date: Aug 2007
Posts: 2,045
Rep Power: 238
pullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond repute
Default Re: New 9mm 445 diodes

We'll see how the next batch of images comes out, maybe my pictures would be worth the effort.

Hell, I'm curious enough about these that I might even stick them in the SEM too. The optical microscopes here will definitely show cavity length and ridge width, but there's another one or 2 things I'm curious about. I mostly want to see if the ridge width/length has changed, or if the bins are simply getting better (the "old" diodes were 1200um long and 15um wide, IIRC), but I'm curious of other things as well..

Also, with a look in the SEM I can tell you definitively if they're from Nichia or not. Not that it really matters though. Maybe I could tell with the microscope too, but it's tough to get the objective close enough for high-mag shots from above. Like in the last thread I posted images in, I could go much higher mag looking at the facet because the can isn't in the way, it's a very small working distance.

Last edited by pullbangdead; 04-16-2012 at 07:27 PM.
pullbangdead is offline   Reply With Quote
Old 04-17-2012, 04:50 AM #218
tsteele93's Avatar
Class 3R Laser
 
Join Date: Dec 2011
Location: South Cackalackey, USA
Posts: 2,065
Rep Power: 321
tsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond repute
tsteele93 tsteele93 is offline
Class 3R Laser
tsteele93's Avatar
 
Join Date: Dec 2011
Location: South Cackalackey, USA
Posts: 2,065
Rep Power: 321
tsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond repute
Default Re: New 9mm 445 diodes

Quote:
Originally Posted by daguin View Post
Monday, via First Class, is fine

Peace,
dave
According to my secretary (aka wife) they went out first class,this afternoon.

__________________
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Tom Steele

Why I'm Here

405nm tsteele93 12x build @ 545mW

445nm Survival Laser @ 1.25W - GIFTED
445nm Stainless Steel Monster with H140 diode @1.62A - 2.15W!
450nm rhd single mode @ 190mW

532nm O-like 50 mW pen from Cajun Lasers - small dot, tight beam!
532nm O-like Crown, rated @ 400mW, metered @ ~450mW with AW battery!
532nm O-like Crown rated @ 500mW, not yet tested
532nm RPL-165 @ 204mW
532nm RPL-375 @ 427mW

635nm rhd Lipstick Tube @ ~485+ mW
638nm Fat Boy @ 825mW - custom build

650nm Bolly BL-8006 @ 319mW

Laser Safety and Eye Injury
tsteele93 is offline   Reply With Quote
Old 04-17-2012, 11:19 PM #219
rhd's Avatar
rhd rhd is offline
Class 4 Laser
 
Join Date: Dec 2010
Posts: 8,491
Rep Power: 1392
rhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond repute
rhd rhd is offline
Class 4 Laser
rhd's Avatar
 
Join Date: Dec 2010
Posts: 8,491
Rep Power: 1392
rhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond repute
Default Re: New 9mm 445 diodes

Ran some spectrometer tests on the diode I got from DTR.

Here's the nutshell:
500mA, 443nm
1000mA, 445nm
1500mA, 447nm
2000mA, 450nm

I won't comment on the actual wavelength, because that will probably vary from diode to diode even with these 9mm units. However, I'll note that the response to current increases is fairly typical for the diodes we're used to. When I search for really high wavelength diodes (the 457 and 458nm gems), I always bin based on performance at 1000mA. Generally, I expect to see a 5nm increase as current moves from 1A to 1.8A. In fact generally most of the wavelength gains come from that range between 1000mA and 1800mA. So, this diode is on par.

I want to provide one really big caution:

Please, let nobody take this data as an indication that "the 9mm diodes are 450nm". I can just envision such a statement incorrectly circulating as gospel. It would be an incorrect interpretation of these results. I'll facepalm you and slap you with a trout Diodes from the same array consistently vary at least 10 nm between extremes. Since we started decoding diode serials, I've even had the ability to compare almost consecutive diode serials, and even they vary. So the data above is just ONE reading of ONE diode, and is no more authoritative than randomly spectrometering ONE diode from an M series projector. Really, the only value to the data above is in confirming two facts:

1) There's no reason to suspect that these 9mm diodes are all some new wavelength.
2) They tend to react to current increases identically to how 5.6mm diodes react.







Attached Thumbnails
New 9mm 445 diodes-500ma.png   New 9mm 445 diodes-1000ma.png   New 9mm 445 diodes-1500ma.png   New 9mm 445 diodes-2000ma.png  
__________________
CURRENT WAVELENGTHS:
405|441|450|467|473|495|505|520|532|556|PGLRG|589|594|632|638|660


SAFETY & IMPORTANT READING (threads authored and contributed to by various members of LPF):
- Federal Aviation Administration - Laser Safety Initiative (link)
- Info release from Laserglow - Default Canadian restrictions on portable lasers (link)
- The Necessity of Safety Goggles (link)

rhd is offline   Reply With Quote
Old 04-18-2012, 12:35 AM #220
justinjja's Avatar
Class 2M Laser
 
Join Date: Mar 2011
Location: Texas
Posts: 692
Rep Power: 52
justinjja has a reputation beyond reputejustinjja has a reputation beyond reputejustinjja has a reputation beyond reputejustinjja has a reputation beyond reputejustinjja has a reputation beyond reputejustinjja has a reputation beyond reputejustinjja has a reputation beyond reputejustinjja has a reputation beyond reputejustinjja has a reputation beyond reputejustinjja has a reputation beyond reputejustinjja has a reputation beyond repute
justinjja justinjja is offline
Class 2M Laser
justinjja's Avatar
 
Join Date: Mar 2011
Location: Texas
Posts: 692
Rep Power: 52
justinjja has a reputation beyond reputejustinjja has a reputation beyond reputejustinjja has a reputation beyond reputejustinjja has a reputation beyond reputejustinjja has a reputation beyond reputejustinjja has a reputation beyond reputejustinjja has a reputation beyond reputejustinjja has a reputation beyond reputejustinjja has a reputation beyond reputejustinjja has a reputation beyond reputejustinjja has a reputation beyond repute
Default Re: New 9mm 445 diodes

Wow, i didn't know current had that effect on wavelength,

What role does temperature play in that data?
If you hold current constant, and change temperature, how is wavelength effected?
__________________
"V=IR It's not a suggestion it's the law"
-georg simon ohm
justinjja is offline   Reply With Quote
Old 04-18-2012, 01:01 AM #221
rhd's Avatar
rhd rhd is offline
Class 4 Laser
 
Join Date: Dec 2010
Posts: 8,491
Rep Power: 1392
rhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond repute
rhd rhd is offline
Class 4 Laser
rhd's Avatar
 
Join Date: Dec 2010
Posts: 8,491
Rep Power: 1392
rhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond repute
Default Re: New 9mm 445 diodes

Quote:
Originally Posted by justinjja View Post
Wow, i didn't know current had that effect on wavelength,

What role does temperature play in that data?
If you hold current constant, and change temperature, how is wavelength effected?
Temperature either:
1) Has almost no impact
or
2) Has the impact so instantaneously that you can't identify it's impact

If I cold-started the diode at any particular wavelength in that range, I would typically see it at most 2nm lower than the final "hot" wavelength. That's REALLY an "at most". Generally the shift as the duty cycle proceeds, if there is one, is like 0.5nm, maybe 1nm. Basically within one or two increments of the spectrometer's minimum resolution.

So keep in mind that the time from starting the laser, to moving my attention back to the spectro software and taking that first "cold" reading, is probably 5 seconds. The change between say 5 seconds in and 2 minutes in, is almost nothing. So either temperature really has no effect, OR the major brunt of that effect is felt within just a few seconds (possible if the emitter gets hot almost immediately).

Either way, the practical implication is that you wavelength won't typically shift while it's just sitting there.
__________________
CURRENT WAVELENGTHS:
405|441|450|467|473|495|505|520|532|556|PGLRG|589|594|632|638|660


SAFETY & IMPORTANT READING (threads authored and contributed to by various members of LPF):
- Federal Aviation Administration - Laser Safety Initiative (link)
- Info release from Laserglow - Default Canadian restrictions on portable lasers (link)
- The Necessity of Safety Goggles (link)

rhd is offline   Reply With Quote
Old 04-18-2012, 01:10 AM #222
tsteele93's Avatar
Class 3R Laser
 
Join Date: Dec 2011
Location: South Cackalackey, USA
Posts: 2,065
Rep Power: 321
tsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond repute
tsteele93 tsteele93 is offline
Class 3R Laser
tsteele93's Avatar
 
Join Date: Dec 2011
Location: South Cackalackey, USA
Posts: 2,065
Rep Power: 321
tsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond reputetsteele93 has a reputation beyond repute
Default Re: New 9mm 445 diodes

Quote:
Originally Posted by rhd View Post
I want to provide one really big caution:

Please, let nobody take this data as an indication that "the 9mm diodes are 450nm". I can just envision such a statement incorrectly circulating as gospel. It would be an incorrect interpretation of these results. I'll facepalm you and slap you with a trout Diodes from the same array consistently vary at least 10 nm between extremes.
Don't test him folks. He WILL do this. I have been face palmed by him several times and once I even thought that I saw a trout behind his back.
__________________
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Tom Steele

Why I'm Here

405nm tsteele93 12x build @ 545mW

445nm Survival Laser @ 1.25W - GIFTED
445nm Stainless Steel Monster with H140 diode @1.62A - 2.15W!
450nm rhd single mode @ 190mW

532nm O-like 50 mW pen from Cajun Lasers - small dot, tight beam!
532nm O-like Crown, rated @ 400mW, metered @ ~450mW with AW battery!
532nm O-like Crown rated @ 500mW, not yet tested
532nm RPL-165 @ 204mW
532nm RPL-375 @ 427mW

635nm rhd Lipstick Tube @ ~485+ mW
638nm Fat Boy @ 825mW - custom build

650nm Bolly BL-8006 @ 319mW

Laser Safety and Eye Injury
tsteele93 is offline   Reply With Quote
Old 04-18-2012, 01:19 AM #223
justinjja's Avatar
Class 2M Laser
 
Join Date: Mar 2011
Location: Texas
Posts: 692
Rep Power: 52
justinjja has a reputation beyond reputejustinjja has a reputation beyond reputejustinjja has a reputation beyond reputejustinjja has a reputation beyond reputejustinjja has a reputation beyond reputejustinjja has a reputation beyond reputejustinjja has a reputation beyond reputejustinjja has a reputation beyond reputejustinjja has a reputation beyond reputejustinjja has a reputation beyond reputejustinjja has a reputation beyond repute
justinjja justinjja is offline
Class 2M Laser
justinjja's Avatar
 
Join Date: Mar 2011
Location: Texas
Posts: 692
Rep Power: 52
justinjja has a reputation beyond reputejustinjja has a reputation beyond reputejustinjja has a reputation beyond reputejustinjja has a reputation beyond reputejustinjja has a reputation beyond reputejustinjja has a reputation beyond reputejustinjja has a reputation beyond reputejustinjja has a reputation beyond reputejustinjja has a reputation beyond reputejustinjja has a reputation beyond reputejustinjja has a reputation beyond repute
Default Re: New 9mm 445 diodes

Was the cold start change any more apparent at higher currents?
__________________
"V=IR It's not a suggestion it's the law"
-georg simon ohm
justinjja is offline   Reply With Quote
Old 04-18-2012, 01:35 AM #224
DTR's Avatar
DTR DTR is online now
Class 4 Laser
 
Join Date: Jun 2010
Location: St. Louis MO
Posts: 5,482
Rep Power: 10819
DTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond repute
DTR DTR is online now
Class 4 Laser
DTR's Avatar
 
Join Date: Jun 2010
Location: St. Louis MO
Posts: 5,482
Rep Power: 10819
DTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond repute
Default Re: New 9mm 445 diodes

Quote:
Originally Posted by rhd View Post
I'll facepalm you and slap you with a trout
I have had that urge with people before as well.
DTR 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


LinkBacks (?)
LinkBack to this Thread: http://laserpointerforums.com/f65/new-9mm-445-diodes-73284.html
Posted By For Type Date
2fl Dave's lens on 445 - Page 2 This thread Refback 04-27-2017 12:31 PM
Nichia NDB7875 445nm 9mm Laser Diode With High Quality Single Element Glass Lens This thread Refback 11-10-2015 07:17 PM
Untitled document This thread Refback 10-08-2015 08:21 PM
Nichia NDB7875 445nm 9mm Laser Diode In a Copper Module W/Leads & 405-G-2 Lens | eBay This thread Refback 09-27-2015 06:23 PM
Nichia NDB7875 445nm 9mm Laser Diode IN A Copper Module With Leads Glass Lens | eBay This thread Refback 07-24-2015 10:03 PM
FS: G9 lens in holder This thread Refback 05-19-2015 09:08 PM
Nichia NDB7875 445nm 9mm Laser Diode IN A Copper Module W Leads 405 G 2 Lens | eBay This thread Refback 05-09-2015 05:49 PM
Untitled document This thread Refback 04-09-2015 06:08 PM
??,??,????,????,???BID,??????,?????? ??? This thread Refback 03-24-2015 05:38 AM
Nichia NDB7875 445nm 9mm Laser Diode In a Copper Module W/Leads & 405-G-2 Lens | eBay This thread Refback 03-20-2015 09:11 PM
Nichia NDB7875 445nm 9mm Laser Diode In a Copper Module W/Leads & 405-G-2 Lens | eBay This thread Refback 03-18-2015 06:32 PM
Nichia NDB7875 445nm 9mm Laser Diode IN A Copper Module With Leads Glass Lens | eBay This thread Refback 03-11-2015 07:49 AM
???????? ?????, ????? - Teron.ru This thread Refback 02-03-2015 02:08 AM
Nichia NDB7875 445nm 9mm Laser Diode in A Copper Module w Leads 405 G 2 Lens | eBay This thread Refback 12-03-2014 11:09 AM
Nichia NDB7875 445nm 9mm Laser Diode With High Quality Single Element Glass Lens | eBay This thread Refback 10-03-2014 07:00 AM
Nichia NDB7875 445nm 9mm Laser Diode IN A Copper Module W Leads 405 G 2 Lens | eBay This thread Refback 08-03-2014 09:28 PM
Nichia NDB7875 445nm 9mm Laser Diode With High Quality Single Element Glass Lens | eBay This thread Refback 05-30-2014 04:26 AM
Nichia NDB7875 445nm 9mm Laser Diode With High Quality Single Element Glass Lens | eBay This thread Refback 05-26-2014 07:28 AM
Nichia NDB7875 445nm 9mm Laser Diode With High Quality Single Element Glass Lens | eBay This thread Refback 05-13-2014 11:19 PM
Nichia NDB7875 445nm 9mm Laser Diode With High Quality Single Element Glass Lens | eBay This thread Refback 05-10-2014 09:25 PM
NDB7875 - Lasers Wiki This thread Refback 04-21-2014 10:40 PM
Untitled document This thread Refback 02-13-2014 05:43 PM
mosfetkiller.de ? Thema anzeigen - Blaue Laser Diode kaputt? This thread Refback 01-07-2014 09:07 PM
Nichia NDB7875 445nm 9mm Laser Diode With High Quality Single Element Glass Lens | eBay This thread Refback 12-28-2013 06:10 PM
2fl Dave's lens on 445 This thread Refback 12-09-2013 04:43 AM
Nichia NDB7875 445nm 9mm Laser Diode IN A Copper Module W Leads 405 G 2 Lens | eBay This thread Refback 11-20-2013 08:14 PM
Untitled document This thread Refback 10-13-2013 09:30 PM
Untitled document This thread Refback 10-10-2013 09:10 PM
Nichia NDB7875 445nm 9mm Laser Diode With High Quality Single Element Glass Lens | eBay This thread Refback 08-18-2013 01:57 PM
Untitled document This thread Refback 08-18-2013 01:37 PM
Untitled document This thread Refback 08-18-2013 12:31 PM
?????? ????? 3W. ????? ??????! | ???????? 2 | LASERS.ORG.RU This thread Refback 08-15-2013 07:08 AM
Untitled document This thread Refback 08-01-2013 06:22 PM
Untitled document This thread Refback 07-25-2013 10:02 AM
Nichia NDB7875 445nm 9mm Laser Diode In a Copper Module With Leads & Glass Lens| eBay This thread Refback 07-04-2013 12:23 PM
Untitled document This thread Refback 06-13-2013 07:22 PM
Untitled document This thread Refback 06-09-2013 12:56 AM
Nichia NDB7875 445nm 9mm Laser Diode With High Quality Single Element Glass Lens | eBay This thread Refback 05-31-2013 03:04 PM
Nichia NDB7875 445nm 9mm ???? ?????? | LASERS.ORG.RU This thread Refback 05-22-2013 09:11 AM
Untitled document This thread Refback 05-15-2013 03:15 AM
Untitled document This thread Refback 05-05-2013 09:32 PM
Untitled document This thread Refback 03-21-2013 08:13 AM
445?? 1???? | ???????? 6 | LASERS.ORG.RU This thread Refback 03-12-2013 05:08 PM
????? 9?? 445?? ?? | LASERS.ORG.RU This thread Refback 03-02-2013 10:49 AM
Untitled document This thread Refback 03-01-2013 08:04 PM
-140 - 3 - Hobbi TV This thread Refback 02-01-2013 10:48 AM
www.LaserFreak.net ? Thema anzeigen - Nouvelles diodes 9mm This thread Refback 01-29-2013 08:20 AM
Untitled document This thread Refback 01-08-2013 02:51 PM
- 782 - Hobbi TV This thread Refback 12-20-2012 05:52 PM
Untitled document This thread Refback 12-20-2012 06:33 AM










Loading








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






Privacy Policy | Advertising Disclaimer | Terms of Use


 


All times are GMT. The time now is 08:21 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