445nm diode died, Sad day
Ok so yesterday I finished my laser I was building and it died here is what I did
After I finished the laser I set the driver to 250mA and then connected the laser diode and turned it on the laser and it lased at like less than a mW so I slowly turned up the diode control until the laser lit an when it did it was super bright. Nowhere near one watt much lower.
so after that I turned it off and about ten minutes later I turned it on and lit a match with it at the focal point lit a match with it to test the power.
later I turned it on again aimed it against the wall and slowly turned it to focus it into a beam but as I was turning the lens a hug black spot formed in the middle of the dot on the wall.
After looking at the diode it looked like this http://82.69.127.162/images/lazor_im...Window_PHR.jpg
only on mine the window was also cracked up.
I was told to fix it I would have to decan it but when I tilted it the hole fricked window fell into the diode and then fell out when I tilted down.
now the diode emits very little blue light and even a small line of green ??
I was told static killed it but I do not believe that for one second.
after talking to some people I have found out that the AR coating is missing on the bottom concave lens that faces the diode.
so for now I guess I am screwed.
the driver I used was this
http://www.ultralasers.com/proinfo.p...age=1&featured
and I used an N-Type ham radio dummy load for heat-sinking
At SELEM a guy offered me another 445nm diode for 4 laserbugs I won in a raffle
now i regret not accepting it.
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unless I can get one for $40 I'm stuck.
Originally Posted by Lazerman121
