Old 07-21-2010, 10:28 PM #1
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Default Is it possible...

To get one of these lasers with a civilized output for those of us who collect colors? I'm thinking 15-20 mW? Every single thing I've found in the last hour and a half of searching has been folks focusing on wringing everything they can out of these lasers; I'm more worried about having a 2 x AAA pen host that will last forever with a nice tight beam.

Is the lasing threshold on these LOW enough to accomplish that? I have no need for a 1W laser.... lol


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Old 07-21-2010, 10:31 PM #2
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Default Re: Is it possible...

What actually is your question.... and what Laser Diode in
particular are you aiming at...

Jerry
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Old 07-21-2010, 10:32 PM #3
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Default Re: Is it possible...

I believe at 200mA (the lasing threshold) they're single mode. Single mode to ~50mW, but they get so hot it's hard to keep there. CNI has the fat CR2 pens <5mW with 1.5mRad divergence listed, no idea on the price though.


Edit: Or just get a custom build and use an ND filter.
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Old 07-21-2010, 10:42 PM #4
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Default Re: Is it possible...

Quote:
Originally Posted by lasersbee View Post
What actually is your question.... and what Laser Diode in
particular are you aiming at...

Jerry
Any of the 445nm diodes.


Quote:
Originally Posted by Prototype View Post
I believe at 200mA (the lasing threshold) they're single mode. Single mode to ~50mW, but they get so hot it's hard to keep there. CNI has the fat CR2 pens <5mW with 1.5mRad divergence listed, no idea on the price though.


Edit: Or just get a custom build and use an ND filter.
Didn't realize that CNI had these. The smallest I found was the GLP-III-A host I believe. I'll look again, thanks. If I can get one from them, I'll probably go after one in one of Glenn's GB's.
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Old 07-21-2010, 11:11 PM #5
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Default Re: Is it possible...

After you guys fried the bejeezus out of your diodes at >2amps, since they started requiring more amperage to produce less watts, did the overall minimum power output drop too? perhaps abused diodes could have a second life as gimpy 5mw power hogging pens.
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Old 07-23-2010, 08:22 PM #6
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Default Re: Is it possible...

http://laserpointerforums.com/f65/lo...age-52128.html

im already searching for a solution since weeks. no holy grail in sight
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Old 07-23-2010, 08:36 PM #7
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Default Re: Is it possible...

If one actually uses it as a "pointer" heat should not be an issue. Intermittent, short runs are not going to cause a significant build-up of heat.

Running one of these at <50mW should be very doable. I have one running at 100mW without any problems. If I can get an extra diode freed up, I could build a lower powered one as a "proof" , but it will be sometime next week at the earliest.

Peace,
dave
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