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Homemade DPSS laser experiments...

H

HDF49

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May 21, 2013
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I've been thinking about a homemade green laser for a while, so recently I got a couple of Nd:YVO4+KTP composite crystals and a 500mw 808nm diode on ebay, all for less than £20. Here's my initial set up:


After lots of fiddling I had the beam focussed in to the crystal and 532nm flying out!



And here are some other pictures:

















The whole set up is really precarious, and the diode is only getting about 300ma so I need to sort out a little driver for the diode to get 500ma in and hopefully 500mw out, that should really beef up the output. I'll also eventually get it all mounted nicely and securely, I just thought there was no harm in experimenting on my desk and I was more than happy to get a 532nm output!
 
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Uh oh bring on the warnings. Where are you safety guys ! Lol cool experiments. Maybe you will perfect a way to do this easily. Might be on to something here. Keep it up
 
tmackbb4 said:
Uh oh bring on the warnings. Where are you safety guys ! Lol cool experiments. Maybe you will perfect a way to do this easily. Might be on to something here. Keep it up
Click to expand...

Well... given that someone is actively working with several hundred milliwatts of invisible light, I'd say that any warning might be justified. :p

@OP: Pretty awesome stuff... keep it up! :D

Trevor
 
I know lol I was only kidding. I wouldn't have mentioned it if I didn't think there was reason for concern. Just trying to say it in a playful manner.
 
tmackbb4 said:
I know lol I was only kidding. I wouldn't have mentioned it if I didn't think there was reason for concern. Just trying to say it in a playful manner.
Click to expand...

Yeah I know, absolutely no problem, it made me laugh! I was so eager to see a green beam I just had to throw this together.
 
Goggles! Goggles! Goggles! Lol just kidding. Very nice setup you have. Now for pointer version.
 
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Ahh the safety kool-aid guy! Who said ir three times! Totally kidding. Canthinkofone is probably one of the reasons I can still see. I tip my hat to you. OHH YEEAHH!
 
I tip my hat to you as we'll. you joined here a month later then me and already match my rep and my post count.
 
Damn I didn't notice that. That is very close! Your ahead by a focus knob.
 
Wow you literally just beat me to it. Ill race you to vet status. Winner gets a buck.
 
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