Coherent light generators – Particular beam control device
Patent
1988-05-26
1989-08-15
Scott, Jr., Leon
Coherent light generators
Particular beam control device
372 33, 372106, 372108, H01S 310
Patent
active
048582395
ABSTRACT:
The invention relates to means for generating a laser beam with an essentially constant angle of divergence over a wide range of operating conditions. The invention further relates to a method of generating such laser beam. The oscillator-amplifier laser system of the invention comprieses in combination an optical resonator, a first active medium and first optical means located within said resonator for generating an oscillator beam; a second active medium for amplifying said oscillator beam and a second optical means external to said resonator. Said first and second optical means have each, according to the invention, a predetermined optical power which maintains a constant divergence-angle of the output beam, even under variations in the induced optical power of the active media. Thus, there is provided an oscillator-amplifier laser system provided with optical means resulting in a beam having an essentially constant divergence angle over a wide range of operating conditions, and particularly over a wide range of repetition rates.
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patent: 4050035 (1977-09-01), Wuerker et al.
patent: 4099141 (1978-07-01), Leblanc et al.
patent: 4276519 (1981-06-01), Marteau
patent: 4554666 (1985-11-01), Altman
patent: 4731788 (1988-03-01), Shoshan
Elop Electrooptics Industries Ltd.
Jr. Leon Scott
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