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Old 09-09-2016, 06:03 PM #1
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Default Do laser diodes have a shelf life?

I was looking at the Wicked Laser webpage and they state that laser diodes have a shelf life of 3-4 years. Two of my beloved greenies (Dragonlaser & WL Krypton) are 2014 vintage. Can I expect them to die in the next few years? I barely use them (<1 minute/day), but try to operate them at least weekly...and keep them in a cool and dry environment.

Here is the link: http://support.wickedlasers.com/hc/e...-of-the-laser-



Last edited by edslittleworld; 09-09-2016 at 06:19 PM.
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Old 09-09-2016, 06:14 PM #2
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Default Re: Do laser diodes have a shelf life?

I have no idea why would they deteriorate if not used (I am thinking about canned diodes).

Of course, if stored properly.
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Last edited by Cel; 09-09-2016 at 06:16 PM.
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Old 09-09-2016, 06:21 PM #3
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Default Re: Do laser diodes have a shelf life?

There are some threads as to DPSS 532 lasers crystals deterioration over time and losing output but I realize your asking about direct diodes.
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"Diamond Select" TOS Phaser 532 190mw
"Diamond Select" TOS Phaser 532 150mw
"Rubie's" TOS Phaser A140 1.4A
"Rubie"s" TOS Phaser A140 1.1A "proto focus nozzle(Lifetime)"
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Last edited by GSS; 09-09-2016 at 06:25 PM.
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Old 09-09-2016, 06:30 PM #4
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Default Re: Do laser diodes have a shelf life?

I think 532nm laser crystals can degrade over time. I don't know about diodes though. I do know that my 8 year old RPL has lost a substantial amount of power for some reason.
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700mw 405nm Sanwu Challenger(782mw peak 730ish mw average)
Sanwu Spiker Series 3W 445nm
2W O-like 450nm(2.2W average/2.25W peak) and Ebay 450nm THOR M II laser(1600mw average/1700 mw peak)
1.4W Jetlasers PL-E Pro 462nm(average 1490mw)
5.05W 465nm build by AlienLaser and 3.5W 465nm Jetlasers PL-E pro.
50mw 515nm challenger(85mw average) and 5-30mw penlaser
1W 520nm Sanwu Spiker series with beam expander
800mw 532nm Jetlasers PL-E Pro (850mw average, 988 mw peak) and 450mw laserglow Hercules with X10DR beam expander
8mw
561nm project box build(8-9mw average 10 mw peak)
589nm Dragon Lasers Spartan 50(51mw average/70mw peak)
593.5nm 2-5mw CNI penlaser(2-3mw average)
638nm Sanwu Spiker series(860mw average) and 500mw O-like 638nm pointer
639nm Sanwu Silver Series Tribeam(1700mw average/1800mwpeak)
1W 650nm Jetlasers PL-E Pro(1038mw average 1087mw peak)
671nm 100mw Red DPSS labby from LillyElectronics
685nm box pointer with laserlands 15mw module.

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Old 09-09-2016, 08:50 PM #5
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Default Re: Do laser diodes have a shelf life?

Not sure about just sitting and being unused but I do know that when we apply heat to semiconductor based diodes we are shortening the life of them.

More heat = shorter life. Hence why proper heatsink is so crucial to our builds. This is key to keeping your diode alive for a good period of time.
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405nm HL LaserBTB
JL PL-E Pro - NUBM07E
JL PL-E Pro 2W 445nm LPM @ 2.3W
M140 + SXD in Maglite until NUBM44 arrives

5mw Green laser 301 - 50mw Avg
532nm Star Pointer 60mw avg 115mw peak
Wicked Laser Nano w/ FT Module - 70mw
PL-E Pro NDG7475 In Progress

650nm LPC-826 in Custom Polished Heatsink
650nm LPC-826 Hugsby XP-2 EDC Build

1000+Lm Maglite XP-L @ 2.7A
BLF D80 Led Light Anodized
BLF A6 Anodized + Bare
CUSTOM 1600LM XML2 1A MTN

Hyperion LPM
Hantek 6022BE (DS Oscope)
"Budget" Bench Supply (Chinese)
HP Agilent 6289A (1.5A PS)
Hakko FX888D


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Old 09-10-2016, 04:14 AM #6
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Default Re: Do laser diodes have a shelf life?

Bullshit. I've got several diode lasers over 10 years old that are just fine. There are millions of commercial barcode scanners that are several decades old.
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Old 09-10-2016, 05:06 AM #7
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Default Re: Do laser diodes have a shelf life?

Yeah, they're just blowing smoke. Solid state lasers of all kinds don't generally deteriorate on the shelf....like...at all if they're built right. some degrade with moisture, but not in any laser you're going to be buying likely. So...yeah, I call bullshit too. I have diodes from long ago that are as old as I am, that still work fine.
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325nm: Omni 2056-M-A01 HeCd
375nm: Melles Griot RCS-007 9.2mW UV

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

472nm Omni-643RYB Whitelight Line
473nm: CNI MGL-473 >100mW Lab laser, 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 lab >3W OEM, LG Hercules-325
543.5nm: 05-LGR-193 Melles Griot HeNe 3.8mW
Melles Griot LGB-563 HeNe

561nm: Melles Griot 85-YCA-015 15mW Lab Laser
568nm: Omni-643RYB Whitelight Line

583.8nm
586.2nm
588.6nm: >80mW CNI PGL-M, 50mW CNI PGL-C

593.5nm CNI >50mW MGL-H 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, many others
Melles Griot LHB-580, LHB-190, WHR-570

647nm: Omni-643RYB Whitelight Line
658nm: Generic pointer

671nm: CNI PGL-III-C (100mW+)
675nm: Custom 501B w/ lab diode (22mW)
676nm: Omni-643RYB Whitelight Line
690nm: custom build
694nm: Portable Q-switched Ruby Laser

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

Last edited by ultimatekaiser; 09-10-2016 at 05:07 AM.
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