Gas laser with dual plasma mixing

Details Gas laser with dual plasma mixing Gas laser with dual plasma mixing

1997-08-15

1999-04-06

Lee, John D.

Coherent light generators

Particular active media

Gas

372 58, 372 61, 372 86, H01S 3038

Patent

active

058927883

ABSTRACT:
A gas laser includes an enclosure forming a first chamber, a second chamber and a lasing chamber which communicates through a first opening to the first chamber and through a second opening to the second chamber. The lasing chamber has a pair of reflectors defining a Fabry-Perot cavity. Separate inlets enable different gases to be introduced into the first and second chambers. A first cathode within the first chamber is provided to produce positive ions which travel into the lasing chamber and a second cathode of a pin-hollow type within the second chamber is provided to produce negative ions which travel into the lasing chamber. A third inlet introduces a molecular gas into the lasing chamber, where the molecular gas becomes excited by the positive and negative ions and emits light which lases in the Fabry-Perot cavity.

REFERENCES:
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patent: 4550408 (1985-10-01), Karning et al.
patent: 4679201 (1987-07-01), Klingel
patent: 4849984 (1989-07-01), Hill
Kielkopf et al., "Lasing in Al following photoionization and neutralization in the presence of H.sub.2 :The role of H.sup.- ", Phys. Rev. 49 (4) pp. 2675-2680 Apr. (1994).
lizuka et al., "Effect of electron temperature on negative hydrogen ion production in a low-pressure AR discharge plasma with methane", Appl.Phys.Lett. 63 p. 1619 Sep. (1993) .
Pinnaduwage, "Comment in `Effect of electron temperature on negative hydrogen ion production` . . . ", Appl.Phys.Lett. 67 p. 1034 Aug. (1995).

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