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Possibly impossible?

WizardG

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One of the compass lasers would be very nice...if I could get it at the right price :cool:

I'd like to try building an external cavity laser just for the challenge, but I think I'll try to re-gas my HeNe too. I was getting 57mW the last time I filled it (~15 years ago) but its barely lasing now and flickers. (guess I need to remove it from my sig')

The seal-off stem is too short now to be useful so I'm gonna have to try adding a new one to the tube without cracking anything. It's tough to find an annealing oven big enough for a 6 foot long tube but maybe I can work with one of the glass artists in Portland to add the new stem.

+rep for the suggestions and links. Thanks!
 

paul1598419

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Good luck, WizardG. It nice to see another holographer on this forum. There are many more option available to us that weren't around in 1980 when I started making my own. I remember the Kiss II in the physics building at Lamar University back in 1974, IIRC. That was a nice piece of holographic work back then.
 




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