Old 02-02-2016, 08:09 PM #1
Starman6809's Avatar
Junior Member
 
Join Date: May 2009
Posts: 7
Rep Power: 0
Starman6809 is a glorious beacon of lightStarman6809 is a glorious beacon of lightStarman6809 is a glorious beacon of lightStarman6809 is a glorious beacon of lightStarman6809 is a glorious beacon of lightStarman6809 is a glorious beacon of light
Starman6809 Starman6809 is offline
Junior Member
Starman6809's Avatar
 
Join Date: May 2009
Posts: 7
Rep Power: 0
Starman6809 is a glorious beacon of lightStarman6809 is a glorious beacon of lightStarman6809 is a glorious beacon of lightStarman6809 is a glorious beacon of lightStarman6809 is a glorious beacon of lightStarman6809 is a glorious beacon of light
Default Need a calibrated green laser

Hello
I am in need of GREEN laser with a calibrated wavelength
It doesnt have to be powerful. It just needs to have had its wavelength measured accurately ( center wavelength +or- 1nm or better)

This is for a project i am working on, but i really dont want to spend a lot of money.

I was hoping one of you may have access to an accurate spectrometer and could provide me with a calibrated "cheap" green laser.

Failing that, i was wondering if any of you would know how close to being 532nm a run of the mill green laser might be, and if and by what percent, the wavelength changes with increase or decrease in electrical power input power or temperature.

thanks


Starman6809 is offline   Reply With Quote


















Old 02-02-2016, 08:27 PM #2
BowtieGuy's Avatar
Class 3B Laser
 
Join Date: Oct 2012
Location: S.E. Michigan U.S.A.
Posts: 4,122
Rep Power: 1031856
BowtieGuy has a reputation beyond reputeBowtieGuy has a reputation beyond reputeBowtieGuy has a reputation beyond reputeBowtieGuy has a reputation beyond reputeBowtieGuy has a reputation beyond reputeBowtieGuy has a reputation beyond reputeBowtieGuy has a reputation beyond reputeBowtieGuy has a reputation beyond reputeBowtieGuy has a reputation beyond reputeBowtieGuy has a reputation beyond reputeBowtieGuy has a reputation beyond repute
BowtieGuy BowtieGuy is online now
Class 3B Laser
BowtieGuy's Avatar
 
Join Date: Oct 2012
Location: S.E. Michigan U.S.A.
Posts: 4,122
Rep Power: 1031856
BowtieGuy has a reputation beyond reputeBowtieGuy has a reputation beyond reputeBowtieGuy has a reputation beyond reputeBowtieGuy has a reputation beyond reputeBowtieGuy has a reputation beyond reputeBowtieGuy has a reputation beyond reputeBowtieGuy has a reputation beyond reputeBowtieGuy has a reputation beyond reputeBowtieGuy has a reputation beyond reputeBowtieGuy has a reputation beyond reputeBowtieGuy has a reputation beyond repute
Default Re: Need a calibrated green laser

Try this thread "Map of members with access to laser power meters", some of these members have spectrometers also. Most of these members will check your laser at no charge.
__________________
405nm Solarstorm S3 (1.09W) • W/L Sonar (264mW)
405nm Custom JETLASERS Ti-B (1.08W)

445nm Build "Ole Blue" (2.8W+)
445nm 1.3W JETLASERS PL-E (1.5W)

450nm Custom JETLASERS Ti-B (327mW)
462nm Solarforce T2 (2.1W)-link-
465nm 1.4mW JETLASERS Mini (1.64W)
467nm "Maraxus" (2.3W)
470nm "Silver Bullet"
515nm 30mW Ehgemus titanium (84mW)
520nm S/S build (250mW) •50mW JETLASERS Ti-B (73mW)
520nm Ehgemus Custom (1.45W) •Coleman Jr. (234mW)
-link-
532nm 1.5W Goldenstar lab (3W)
532nm 500mW JETLASERS PL-E (754mW)
532nm 100mW JETLASERS Ti-B (161mW)
532nm 5mW "Eclipse" mints tin (54mW)

589nm 80mW CNI PGL-III-C (154mW)
589nm 50mW Dragonlasers Spartan (124mW)

594nm L/G Rigel-6 "LPF Anniv. Ed." (6.7mW)
635nm 20mW JETLASERS Ti (30mW)
638nm Custom JETLASERS Ti-B (232mW)-link-
638nm "Coleman Special" (260mW)
638nm Build in sinner's "MS-SSW Stubby" (1.25W)
650nm W/L E2 (89mW) • Laserbtb PL-650 1000 (1W)
660nm S/S Build (383mW)
674nm 501B/Melles Griot u/k Build 20mW

LK-3D Projector

5W Ophir/dmm LPM, nospin 5W LPM

Last edited by BowtieGuy; 02-02-2016 at 08:30 PM.
BowtieGuy is online now   Reply With Quote
Old 02-02-2016, 08:31 PM #3
Hap's Avatar
Hap Hap is online now
Super Moderator
 
Join Date: Sep 2013
Location: Morro Bay, CA, USA
Posts: 8,167
Rep Power: 958490
Hap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond repute
Send a message via Skype™ to Hap
Hap Hap is online now
Super Moderator
Hap's Avatar
 
Join Date: Sep 2013
Location: Morro Bay, CA, USA
Posts: 8,167
Rep Power: 958490
Hap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond repute
Send a message via Skype™ to Hap
Default Re: Need a calibrated green laser

As far as I know DPSS wavelengths never change wavelengths? 532nm will always be 532nm, nothing else.

-Alex
Hap is online now   Reply With Quote
Old 02-02-2016, 08:48 PM #4
Class 1 Laser
 
Join Date: May 2014
Location: Spain
Posts: 72
Rep Power: 35937
jors has a reputation beyond reputejors has a reputation beyond reputejors has a reputation beyond reputejors has a reputation beyond reputejors has a reputation beyond reputejors has a reputation beyond reputejors has a reputation beyond reputejors has a reputation beyond reputejors has a reputation beyond reputejors has a reputation beyond reputejors has a reputation beyond repute
jors jors is offline
Class 1 Laser
 
Join Date: May 2014
Location: Spain
Posts: 72
Rep Power: 35937
jors has a reputation beyond reputejors has a reputation beyond reputejors has a reputation beyond reputejors has a reputation beyond reputejors has a reputation beyond reputejors has a reputation beyond reputejors has a reputation beyond reputejors has a reputation beyond reputejors has a reputation beyond reputejors has a reputation beyond reputejors has a reputation beyond repute
Default Re: Need a calibrated green laser

I agree, go with the dpss route and you've got it

Last edited by jors; 02-02-2016 at 08:49 PM.
jors is offline   Reply With Quote
Old 02-02-2016, 08:55 PM #5
diachi's Avatar
Class 4 Laser
 
Join Date: Feb 2008
Location: Yellowknife, NT, Canada
Posts: 9,062
Rep Power: 707794
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: 9,062
Rep Power: 707794
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: Need a calibrated green laser

Quote:
Originally Posted by Hap View Post
As far as I know DPSS wavelengths never change wavelengths? 532nm will always be 532nm, nothing else.

-Alex
Quote:
Originally Posted by jors View Post
I agree, go with the dpss route and you've got it

You are both correct. You want DPSS.

What project are you working on? We might be able to recommend something more specific if we have more information!
__________________


405nm | Banggood LT-850 | 50mW Metered | Review Unit | >>Review<<
445nm | Sanwu Laser Pocket Series | 400mW Metered
445nm | NDB7242E Pen Build | 60mW Metered | >>Build Thread<<
450nm | LaserPointerStore - Thor H2 | 1.6W Metered | Review Unit | >>Review<<
473nm | B&W Tek BWB-10-OEM |
488nm | Spectra Physics 163 Argon | ~30mW Metered |
495nm | Laser66 Pen Build | WIP
515nm | PL515 Pen Build | 50mW | >>Build Thread<<
520nm | Laserlands 520 5mW | 3mW Metered | Review Unit | >>Review<<
532nm | Gearbest 303 Pointer | 50mW Metered
532nm | Gearbest JD-850 Pointer | 30mW Metered |
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


B&W Tek Spectrometer
LaserBee 2.5W USB LPM


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

diachi is online now   Reply With Quote
Old 02-02-2016, 11:03 PM #6
Starman6809's Avatar
Junior Member
 
Join Date: May 2009
Posts: 7
Rep Power: 0
Starman6809 is a glorious beacon of lightStarman6809 is a glorious beacon of lightStarman6809 is a glorious beacon of lightStarman6809 is a glorious beacon of lightStarman6809 is a glorious beacon of lightStarman6809 is a glorious beacon of light
Starman6809 Starman6809 is offline
Junior Member
Starman6809's Avatar
 
Join Date: May 2009
Posts: 7
Rep Power: 0
Starman6809 is a glorious beacon of lightStarman6809 is a glorious beacon of lightStarman6809 is a glorious beacon of lightStarman6809 is a glorious beacon of lightStarman6809 is a glorious beacon of lightStarman6809 is a glorious beacon of light
Default Re: Need a calibrated green laser

Thanks guys !
I was thinking as much, but wasn't absolutely sure.

I work in the cinema industry as a technician. We use one of these color meters (USL PCA 100)

Video Only

to set up digital projector chromatic values. I dropped it the other day, and although it still "works", i fear it may be out of calibration. There was also something rattling, which, when i opened it up, turned out to be just a loose eyepiece retical...easy to fix.

The PCA 100 is a repacked Ocean Optics "USB2000" spectrometer.

USB2000+RAD - Ocean Optics

It is fairly expensive to send out and have recalibrated. So i was looking for a cheap accurate wavelength source to do a quick check to see if it is necessary to have it recalibrated or not.

thanks again...ill give a green DPSS a try and let you all know how it goes
Starman6809 is offline   Reply With Quote
Old 02-07-2016, 02:52 AM #7
Starman6809's Avatar
Junior Member
 
Join Date: May 2009
Posts: 7
Rep Power: 0
Starman6809 is a glorious beacon of lightStarman6809 is a glorious beacon of lightStarman6809 is a glorious beacon of lightStarman6809 is a glorious beacon of lightStarman6809 is a glorious beacon of lightStarman6809 is a glorious beacon of light
Starman6809 Starman6809 is offline
Junior Member
Starman6809's Avatar
 
Join Date: May 2009
Posts: 7
Rep Power: 0
Starman6809 is a glorious beacon of lightStarman6809 is a glorious beacon of lightStarman6809 is a glorious beacon of lightStarman6809 is a glorious beacon of lightStarman6809 is a glorious beacon of lightStarman6809 is a glorious beacon of light
Default Re: Need a calibrated green laser

Hi Guys
So i had some time to check the wavelength of 3 different Green lasers.
After averaging a few readings each, i got the following peak wavelengths:

Green #1 532.4
Green #2 532.8
Green #3 532.9

It seems the PCA100 is off a little and will need calibration afterall

Again, thanks for you help
Starman6809 is offline   Reply With Quote
Old 02-07-2016, 03:07 AM #8
Cyparagon's Avatar
Class 4 Laser
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,292
Rep Power: 199036
Cyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond repute
Cyparagon Cyparagon is online now
Class 4 Laser
Cyparagon's Avatar
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,292
Rep Power: 199036
Cyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond repute
Default Re: Need a calibrated green laser

It may display more decimal places, but it doesn't mean it is accurate to them. I've got a spectrometer with almost identical specs. The best you can hope for is +/-0.5nm. I don't see a spec for accuracy, but I'd probably give the spec to be within 1 or 2nm, given the resolution is 2nm. Of course, equipment can usually do better than its spec. You could recalibrate it, but I'd say it's close enough for what it is.
__________________
A problem well stated is a problem half solved.
Cyparagon 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

























Privacy Policy | Advertising Disclaimer | Terms of Use


 


All times are GMT. The time now is 10:27 PM.


Powered by: vBulletin
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO
Privacy Policy | Advertising Disclaimer | Terms of Use
Copyright (C) 2017 Laser Pointer Forums, LLC