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FrozenGate by Avery

beam expander inside an olike laser?

BTW if anyone is interested in realigning their KTP crystal brass pill, get this :

Adhesive Heatsink Plaster for PC Hard Parts (5g) - Free Shipping - DealExtreme

Just scrape off the original white thermal glue. Apply this and wa la. Shouldn't take more than 5 mins resticking and re-aligning it. You just try to get the green light, and to align it properly with the beam coming straight, you can just put it on a horizontal surface against a white wall and try to roll it around. You will get the hang of it pretty fast.

The glue sets in about 15 mins. It's ok, you can re-do it to your heart's content. You can then get a very beautiful "spotlight", as in the the dot could be 5.0 mRad and whole hotspot is really very even.

If it's not aligned properly, you'd get a crescent moon or something. The beam internally is also partially hitting the sides of the bezel....you'd get a slight power loss.
 







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