Solid state laser oscillator and machining apparatus using the s

Details Solid state laser oscillator and machining apparatus using the s Solid state laser oscillator and machining apparatus using the s

1996-09-26

1999-05-18

Scott, Jr., Leon

Coherent light generators

Particular operating compensation means

372101, 372 99, 372105, 372 68, 372 69, H01S3/00

Patent

active

059057491

ABSTRACT:
In a resonating-type solid-state laser oscillator including birefringent a solid-state element containing a laser active medium and providing a plurality of thermal lenses during excitation and reflecting mirrors arranged oppositely to each other on both sides of the solid-state element so that their optical axes are coincident to each other, a prescribed relationship is given among the refractive index and length of the solid-state element, the radii of curvature of the reflection mirrors, the distances between the reflecting mirrors and the solid-state element and the difference between 1/f of the plurality of thermal lenses by owing to birefringence of the solid-state element, so that oscillation areas due to the plurality of thermal lenses are separated from each other.

REFERENCES:
patent: 5001718 (1991-03-01), Burrows et al.
patent: 5132980 (1992-07-01), Connors et al.
patent: 5408481 (1995-04-01), Scheps
Abstract 6-53576, Isao Yoshimura, "Solid State Laser Oscillator", Sumitomo Metal Mining Co. Ltd.
Abstract 4-28274, Shigeo Kubota, "Solid-State Laser Oscillator", Sony Corp.
Abstract 5-75194, Masatoshi Saruwatari, "Wavelength Multimode Synchronous Laser Equipment", Nippon Telegraph and Telephone Corp. (NTT).
Solid-State Laser Engineering, 2nd Edition, Springer-Veralag, pp. 192-193, (cited on p. 1).
"Recent developments in laser resonator design", Optical and Quantum Electronics, vol. 23, pp. 1105-1134, 1991.
"Output power limitations in CW single transverse mode Nd: YAG lasers with a rod of large cross-section", Optical and Quantum Electronics, vol. 25, pp. 489-500, 1993.

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