broke the diode in 75mw greenie

[husker1]

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.

 

[husker1]

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?

 

[ElektroFreak]

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.

 

[husker1]

where do i go about getting one of those. and is that the rest route to just another ir diode to it?

 

[hydrogenman15]

I could only find packs of 5. http://cgi.ebay.com/500mw-808nm-las...53141QQcmdZViewItemQQ_trksidZp1742.m153.l1262

I would have directed you to stonetek but his diodes are only 200mW's.

--hydro15

 

[husker1]

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.

 

[thebucketmouse]

I could only find packs of 5. http://cgi.ebay.com/500mw-808nm-las...53141QQcmdZViewItemQQ_trksidZp1742.m153.l1262

I would have directed you to stonetek but his diodes are only 200mW's.

--hydro15

That's not a pack of 5, unfortunately the auction says it's only for 1

 

[husker1]

Just confirmed it does use a c mount instead of one of those types of diodes.

 

[diachi]

Snoctony on eBay sells 500mW c-mounts.

-Adam

 

[Spyderz20x6]

http://cgi.ebay.com/500mw-808nm-las...ryZ53141QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

Probably the best deal you will find

 

[husker1]

so if the c-mount is rated at 500mw, what kind of power will i be able to get out of my laser now?

 

[husker1]

the same ebay company sells a 1000mw 808nm laser diode C-mount with fast Axis Lens. what do you guys think about that

 

[FireMyLaser]

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.

 

[Spyderz20x6]

the same ebay company sells a 1000mw 808nm laser diode C-mount with fast Axis Lens. what do you guys think about that

The crystal will overstaurate and crack.

 

[Spyderz20x6]

so if the c-mount is rated at 500mw, what kind of power will i be able to get out of my laser now?

Around 75mW.

 

[mliptack]

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!