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Old 07-09-2012, 07:19 AM #1
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Default FS: 700mW "mGreen" / Pico 532nm Module

For sale is one of the alignment-free Nd:YVO4/PPLN "crystals on a chip" modules for creating 532nm output from 808nm input. They were discussed briefly here:
New Alignment-free crystals Module "mGreen" in a chip for 532nm lasers.



When news of these broke, one listing (it turned out to be put up by someone at the company making them) showed up on eBay. I grabbed one then, but I haven't noticed the listing anymore. I don't think they really intended the modules for "one-off" sales to consumers. I scooped one when it popped up, with grand plans of turning a dead PGL module into a home for a new high powered 532. But, time has not been plentiful enough for a project of that nature

What I can tell you, is that while it IS truly "alignment free", that doesn't mean that you can just barf any old 808nm laser light in its vague direction and expect a beautifully collimated 532nm 700mW beam out. The power of your output is very much impacted by the quality of your input. So the tighter your 808nm input, the more precisely you position the module relative to the 808nm beam, and the more you heatsink the module itself to something thermally conductive, the better.

That said, it's quite remarkable just how "sloppiness tolerant" this little module is. I've been able to just sit it on a flat surface and shine a FireDragon 1W 808nm handheld (an old one from DD) at the module, from several feet away, and get 532nm output. That's obviously not the setup that would give you high power, but it's a really neat experiment - to see this little tiny 5mm "thing", connected to nothing, mysteriously output green light - it's pretty nifty. The company says you can get up to 800mW output of 532nm. I have no idea whether that's true. I'm skeptical. It just seems too small to do such a high amount of output. But, that's what they claim (here's their data:C2C Link Corporation) Evaluate their claims as you will. No matter how you slice this guy though, it's definitely a "project" to get her up and running in a portable.



I think I paid $115 plus shipping. I'm okay with letting it go for $80 plus shipping. Apart from testing it with the FireDragon, this module has been inside it's original "gel pack" the whole time.
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Old 07-10-2012, 01:06 AM #2
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Default Re: FS: 700mW "mGreen" / Pico 532nm Module

I'll take it. PM incoming.
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