Damn good short reference; thanks. This laser uses free air (STP).
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7 years ago
new laser?
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7 years ago
The nitrogen in the air is what lases.
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7 years ago
No beam stop.
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7 years ago
Well,,,,,,back in the 1800's or so there were a lot of electrical experiments concerning enclosed tubes of gas: dark spaces, cathode rays, etc (do not know all of the things discovered). Varied pressure,varied voltages,etc. Apparently what was NOT done was vary the distance to an anode that had a hole in it and have another electrode afterwards.
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7 years ago
I understand that some ceramic "alloys" are getting close.
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7 years ago
The Cymer DUV eximer light sources (used to make the light to expose ICs) are similar pulsed transverse-discharge geometries. They use various exotic gasses to get down to as short as 192 nm. They may have mirrors... not sure about that.
They use saturating magnetics to generate the electrical drive. Some are single-chamber, some are MOPAs.
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-- John Larkin Highland Technology, Inc picosecond timing precision measurement jlarkin att highlandtechnology dott com http://www.highlandtechnology.com
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7 years ago
r.
Sounds a bit like this
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which seem to depend on spiral liquid crystals as the lasing element and th e optical cavity. You align them with an electric field and because the str ength of the electric field influences the pitch of the spiral structure, y ou also get to tune the lasing frequency. Cool.
-- Bill Sloman, Sydney