High-power laser having an unstable optical resonator

Details High-power laser having an unstable optical resonator High-power laser having an unstable optical resonator

1986-04-07

1987-02-24

Scott, Jr., Leon

Coherent light generators

Particular resonant cavity

Unstable resonator

372 99, 372 93, 372108, H01S 308

Patent

active

046463143

ABSTRACT:
A high-power laser, especially one with a gaseous excitation medium, having an unstable optical resonator is disclosed. Fully reflecting mirrors, whose planes of curvature are parallel to one another, form the ends of the unstable optical resonator. A third mirror is concavely curved in a plane perpendicular with respect to the other two mirrors. The mirrors have a rectangular cross section and are preferably metallic. The mirrors constituting the ends of the unstable optical resonator form a confocal resonator.

REFERENCES:
patent: 4229710 (1980-10-01), Shoshan
patent: 4399540 (1983-08-01), Bucher
patent: 4433418 (1984-02-01), Smith
patent: 4484334 (1984-11-01), Pressley
Borghese et al; "Unstable-Stable Resonators with Toroidal Mirrors", Appl. Opt., vol. 20, No. 20, 5 Oct. 1981.
Phillips et al; "Off-Axis Unstable Laser Resonator: Operation", Appl. Opt., vol. 15, No. 9, Sep. 76.
Ananev et al; "Solid Laser with a High Spatial Coherence of Radiation", Sov. Jour. Quant. Elect., vol. 1, No. 4, Jan.-Feb. 72.
Dyer et al; "Studies of a TEA CO.sub.2 Laser with a Cylindrical Mirror Unstable Resonator", Opt. Comm., vol. 15, No. 5, Sep. 1975.
Deka et al; "High-Power Tuned TEA CO.sub.2 Laser Using a Three-Mirror Confocal Unstable Resonator", Appl. Opt., vol. 18, N. 22, 15 Nov., 1979.

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