Laser device

Details Laser device Laser device

1984-04-20

1990-04-03

Sikes, William L.

Coherent light generators

Particular resonant cavity

Specified cavity component

372107, H01S 308

Patent

active

049146718

ABSTRACT:
A laser device having an infrared laser medium and an aperture member disposed within a resonator in which the mode symmetry is improved. An optical resonator including a total reflecting mirror and a partial reflecting mirror disposed at opposite ends of a gap between electrodes is arranged parallel to an optical axis and orthogonal to a gas flow direction. An aperture member disposed along the optical axis between the mirrors on the side of the partial reflecting mirror has the form of a ring having an axis coinciding with the optical axis. Plural laser beam detecting elements are disposed on the inner peripheral area of the ring. The angular positions of the mirrors are controlled such that a difference in outputs of the detecting elements is minimized.

REFERENCES:
patent: 3579140 (1971-05-01), Anderson
patent: 3603688 (1971-09-01), Smith-Vaniz
patent: 3699474 (1972-10-01), Landry
patent: 3904983 (1975-09-01), Moreno
patent: 4010363 (1977-03-01), Hernquist
patent: 4330705 (1982-05-01), Kollodge
patent: 4391519 (1983-07-01), Kuwabara et al.
patent: 4393303 (1983-07-01), Spinhirne
French Search Report.

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