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FrozenGate by Avery

broke the diode in 75mw greenie

H

husker1

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Nov 22, 2008
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I've had a 75 mw cni laser for two years and recently after taking it apart and lack of knowledge, the diode is no longer working. I know the driver works because i soldered a cheap red diode and it worked. So i figure i broke the ir laser diode from it in the process of taking it apart. So, now i have everything but a working diode for my laser. Any advice on how to proceed from here. I dont want to spend a bunch on a new 75 mw module. Could i upgrade by adding a hd dvd diode to the board? I've read the pages of information and am now ready to rebuild.
 





Maybe i want to stay with a green beam because of its high visibility. maybe just a higheroutput diode with the green crystal i already have?
 
You need at least a 200-500mW 5.6mm 808nm Diode for a 75mW laser pointer module. It needs to be 808nm to work in a green laser. DVD/CD/BluRay diodes will not work.
 
where do i go about getting one of those. and is that the rest route to just another ir diode to it?
 
my laser diode looks nothing like those. its looks more like a c-mount. but the hole in the middle isnt as big. the c mount is screwed down to a round disk.
 
Just confirmed it does use a c mount instead of one of those types of diodes.
 
so if the c-mount is rated at 500mw, what kind of power will i be able to get out of my laser now?
 
the same ebay company sells a 1000mw 808nm laser diode C-mount with fast Axis Lens. what do you guys think about that
 
The cni lasers use a 500mW pump, so you'll get ~75mW of green.
If you use 1000mW the chances are that the crystals will get burned or cracked because they're not so efficient.
 
husker1 said:
the same ebay company sells a 1000mw 808nm laser diode C-mount with fast Axis Lens. what do you guys think about that
Click to expand...
The crystal will overstaurate and crack.
 
Did you adjust the pot at all? Thats the way I ruined my 5mw 532nm laser. (the first greenie I owned)

Replacing the diode might be difficult. If you had a hard time getting it apart without ruining the diode, I figure you might have a similarly difficult time putting it back together without damaging it. The best advice I can give is use some static discharge protection and take your time!
 
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