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cfreukes
4.99mW Green Laser Toy
Joined: 23 Jul 2009
Posts: 3
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 Posted: 7/23/09, 1:04 PM Post subject: 150mW 405n |
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After much reading I decided to make my first laser. (Noob Alert!)
I order a 150mW 405nm blu-ray diode with housing and focusing lens on ebay. It came with a driver kit for a simple adjustable driver.
I'm no EE but electronics are a hobby. I assembled the driver, tested my voltages and put it all together in a case.
The blu-ray diode worked great. I happily burnt tape and popped balloons for 3-4 weeks.
one evening I got it out to play with and shined the beam on the wall a few times. I set it on the table and picked it up a few minutes later and there was no beam. I pointed it at the table a few inches away and saw a very faint blu dot and then nothing.
I was hoping it was my driver so I bought a pre-assembled microdriver from ebay and attatched the diode, nadda.
Is that how they die? |
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qinanan007
Modified 10mW Greenie
Joined: 23 Jul 2009
Posts: 13
Location: China
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| Posted: 7/23/09, 10:03 PM Post subject: Re: 150mW |
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| I think maybe the LD has some problem. |
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john lawson
Phoenix Laser
Joined: 14 Jan 2008
Posts: 84
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| Posted: 8/06/09, 11:21 AM Post subject: |
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| its dead i had a few do that its dead or your power supply isn't giving enough current/voltage but those are fragile |
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jayrob
25mW Classic Wicked Laser
Joined: 13 Sep 2007
Posts: 34
Location: N. California - U.S.A.
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| Posted: 8/21/09, 11:27 AM Post subject: |
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Yeah... try a new battery first, but it sounds like it LED'd...
Jay |
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Sefrez
Elite Laser
Joined: 22 Aug 2008
Posts: 135
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| Posted: 8/23/09, 4:45 PM Post subject: |
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Yeah that's what happens with a "dead" diode.
It's not completely off, but is very faint.
It probably got too much current, or the current was not stable enough. |
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