Coherent light generators – Particular resonant cavity – Specified cavity component
Patent
1987-02-11
1988-05-17
Davie, James W.
Coherent light generators
Particular resonant cavity
Specified cavity component
372 92, 372 93, H01S 308
Patent
active
047456183
ABSTRACT:
An optically stable resonator producing a laser beam which by the use of a converging and of a diverging optical element is subdivided into an amplifier part with large beam diameter and small energy density and into a mode filter part with small beam cross section and correspondingly small Fresnel number all with a short structural length of the resonator. The advantage of the present invention resides in the high beam quality of the produced beam which contains predominantly only the fundamental mode, and in the small thermal load of the participating elements, especially of the decoupling window. The subdivision of the stable resonator according to this invention into an amplifier part and into a load filter part opens up to this resonator type power output ranges which were precluded heretofore by reason of a maximum permissive thermal load of the decoupling window.
REFERENCES:
patent: 3522553 (1970-08-01), Fox
patent: 3609585 (1971-09-01), Hufnagel
patent: 3868590 (1975-02-01), Itzkan et al.
patent: 4423511 (1983-12-01), Morton
patent: 4551684 (1985-11-01), Bernhardt
patent: 4554666 (1985-11-01), Altman
patent: 4696012 (1987-09-01), Harshaw
Daimler-Benz Aktiengesellschaft
Davie James W.
Vo Xuan
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