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Old 04-22-2011, 10:32 PM #1
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Default help with 445?

Alright, so I ordered a 445 1.4w laser and it seemed really nice. However something seemed off, I couldn't get the beam down to a small point, it always had some funky stuff around it. I took the lens out and when I pointed it at a wall I could see something was not right. Instead of all of the lines from being horizontal and nice it looked all jumbled up, going vertical where it should be going horizontal. I looked into the diode and there was a spot in the middle.


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Old 04-22-2011, 11:49 PM #2
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Default Re: help with 445?

Just a shot in the dark, no pun intended, but it looks like your diode fried. When multimode diodes degrade you will start seeing the bars across spot. It looks like only one bar is lasing properly, and the others are degraded.

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Old 04-22-2011, 11:59 PM #3
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Default Re: help with 445?

Alright, I just bought this from a LPF member and am discussing it with him now.
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Old 04-23-2011, 12:05 AM #4
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Default Re: help with 445?

Is the window clean as well?

When you say "looked into the diode and there was a spot in the middle" does that mean that there is something on the small glass front of the diode?

Remove any batteries before examining the diode window.

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Last edited by daguin; 04-23-2011 at 12:08 AM.
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Old 04-23-2011, 12:12 AM #5
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Default Re: help with 445?

I had one go zombie like that. Pretty much at most a low power laser with high current consumption and at least a really expensive LED. I cranked up the current on the flexmod till she died when it happened to me
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Would you like to purchase some M-140 445nm diodes (individual or pressed into Aixiz or pure copper module) at very reasonable prices? PM me if you are interested!

My laser list has become way too big; I'm listing some of my favorites out of my extensive collection.
615mw 405nm/12X Spiderfire X-03
148mw 405nm/GGW in my "Hotlight-Saber" host
1920mw 445nm River Rock custom
1530mw 445nm Yobresal
1360mw 445nm Qumefox Sipik
800mw 445nm WL Arctic Spyder S3
240mw 473nm CNI Labby
8mw 473nm CNI Labby
528mw 532nm Lazerer Cannon
310mw 532nm Firedragon III
300mw 532nm CNI Labby
180mw 532nm SKY Laser
4x 147-267mw 532nm Waterproof
900mw 635nm in Temporary Finned Labby Sink
Several 635nm diodes awaiting a build
500mw 650nm Dual LPC-826 Labby
251mw 650nm/LPC-815 Ultrafire U-501B
Several 685nm diodes awaiting a build
3W 808nm diode awaiting build

Kenometer w/ Coherent Thermopile 10W
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Radiant Alpha 2W LPMSOLD=Now in Kuwait!
1.2W RGB Projector; JNM Wide Sky Galvos (Made in Germany); Laser Show Express; Arduino-based DAC
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Old 04-24-2011, 04:11 AM #6
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Default Re: help with 445?

Dave, I believe you're right but I'm not %100. I am shipping it back to the seller and he's going to take a look at it. I would get down and dirty with it, but I'm not sure how it was put together and would not want to brick a laser.
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