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Old 09-11-2017, 11:13 PM #1
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Default What is going on?

Hello everyone,

In March of this year, I bought a 473 "5mW" pointer from an eBay seller. They were selling your typical GLP-473. Upon receiving it in March, I got a peak of 6mW's out of it. All good.

Fast forward to 2 months ago. While doing a photo shoot of all my lasers, I had all of my lasers turned on and mid-way in my shoot I noticed the 473 got pretty dim all of sudden. I had these on for about 30sec at that time. The 594 was barely starting to get warm, so the 473 was still well in it's duty cycle.

Anyway, yesterday. When measured on my LPM I got a peak of maybe, 2mW? If I got lucky. I tried new batteries and the dot looks just the same.

What gives? I've never ran it to the point of it ever getting warm at all like the 594's after 30 sec.


-Alex


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Old 09-11-2017, 11:38 PM #2
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Default Re: What is going on?

maybe somehow a crystal got misaligned? idk ive never owned a glp before and havent taken one apart to look into one..
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Old 09-11-2017, 11:46 PM #3
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Default Re: What is going on?

The alignment could be getting loose which might cause a sudden drop in output if the crystals expanded a bit and got out of whack.
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Old 09-11-2017, 11:55 PM #4
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Default Re: What is going on?

Quote:
Originally Posted by Merpie101 View Post
maybe somehow a crystal got misaligned? idk ive never owned a glp before and havent taken one apart to look into one..
Quote:
Originally Posted by Rivem View Post
The alignment could be getting loose which might cause a sudden drop in output if the crystals expanded a bit and got out of whack.
Darn. I know these aren't worth taking apart to trying to fix, as they're pretty much all glue. Plus, I wouldn't even want to do that.

*sigh*

-Alex
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Old 09-12-2017, 12:01 AM #5
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Default Re: What is going on?

Yeah. You have to be really careful with the 473 crystals too. They're really delicate and susceptible to moisture.

Might want to ask Ultimatekaiser though. I think he's fixed a few of these.
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Old 09-12-2017, 12:07 AM #6
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Default Re: What is going on?

Quote:
Originally Posted by Rivem View Post
Yeah. You have to be really careful with the 473 crystals too. They're really delicate and susceptible to moisture.

Might want to ask Ultimatekaiser though. I think he's fixed a few of these.
I'll think about it. Very strange that it would suddenly get out of alignment like that, especially since it's never been dropped or anything like that. Oh well.

-Alex
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Old 09-12-2017, 12:19 AM #7
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Default Re: What is going on?

Unfortunately, anything optical or electronic can really suffer from thermal stress simply due to turning off and on. It's too bad none of the diodes are left. You could have a nice direct diode pen with more power instead.

Edit: If it breaks, let me know. I'd like to have a look inside.
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Old 09-12-2017, 12:32 AM #8
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Default Re: What is going on?

Alex, I'm sitting on seven 473nm DPSSLs. Once I get through the spectrometer problems with it, I'll see about getting one of these lasing and maybe I'll be able to send you one. They aren't pointers, but nice looking labbys. Probably have a couple of good ones in there.
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Old 09-12-2017, 12:33 AM #9
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Default Re: What is going on?

Quote:
Originally Posted by paul1598419 View Post
Alex, I'm sitting on seven 473nm DPSSLs. Once I get through the spectrometer problems with it, I'll see about getting one of these lasing and maybe I'll be able to send you one. They aren't pointers, but nice looking labbys. Probably have a couple of good ones in there.
Hello Paul,

Thank you! What kind of labby's are they?

-Alex
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Old 09-12-2017, 12:39 AM #10
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Default Re: What is going on?

Have you looked at the B&W Tek 473nm laser thread? Several photos of them are on there. The heads are about the size of a dollar bill and ~3 inches tall. The drivers are on a separate circuit board and look very well made.
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Old 09-12-2017, 12:56 AM #11
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Default Re: What is going on?

Ok. Thank you Paul.

-Alex
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Old 09-12-2017, 01:00 AM #12
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Default Re: What is going on?

I haven't done anything with any of the lasers yet, so it will depend on whether they are salvageable.
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Old 09-12-2017, 01:02 AM #13
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Default Re: What is going on?

Quote:
Originally Posted by paul1598419 View Post
I haven't done anything with any of the lasers yet, so it will depend on whether they are salvageable.
Not a problem with whatever you decide to do!

-Alex
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Last edited by Hap; 09-12-2017 at 01:03 AM.
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Old 09-12-2017, 01:16 AM #14
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Default Re: What is going on?

On a lighter side, I finally got the damn software for the spectrometers loaded on my laptop and need to get back to that project. Got another RS232 adapter today. Have one more still on the way. Yahoo!
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Old 09-12-2017, 01:20 AM #15
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Default Re: What is going on?

I would like to try and test my laser while it's cold. Would it hurt it if I put it in a Ziploc bag and into the freezer for 10mins or such? I am worried about moisture forming. I've read that before with other members trying this

-Alex
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"The stars should fall and the earth be riddled, imagine all your problems be seem so little, funny how the world so brittle." -Tribal Seeds
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Old 09-12-2017, 01:23 AM #16
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Default Re: What is going on?

Might not be a good idea. I don't know what that might do to the crystal.
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Thor H Dual Power 445nm, 438 mW & 1648 mW
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445nm 2.2 watts Nichia MS Envy

445nm 2 watt SMP Copper Host
477nm 127 mW 501B
488nm Uniphase #2201-20SLAT argon laser head and power supply >40mW
520nm LaserLands pointer Measures 510nm
532nm LSR532H-1W Laser, LSR-PS-N1 Driver, RS-75-5 P.S. 1300 mW
532nm 200mW Thermostatically Controlled 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 PS
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
635nm Lifetime17 Mini-camo build 687mW
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
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