Coherent light vergence varying apparatus

Details Coherent light vergence varying apparatus Coherent light vergence varying apparatus

1985-07-22

1986-08-12

Petrakes, John

Coherent light generators

Particular component circuitry

Optical pumping

350623, 350624, 372107, H01S 3081, G02B 504, G02B 508, G02B 1700

Patent

active

046052909

ABSTRACT:
An apparatus for varying the vergence of a beam of light from a laser including first and second focusing reflector means; one for receiving the beam of light and another for directing it away from the apparatus in a predetermined direction. Intermediate the two focusing reflecting means, there is provided an arrangement of substantially flat surface reflector means, one of which is moveable for varying the length of the path of the beam of light through the apparatus. In accordance with a preferred embodiment, the two focusing reflecting means comprise parabolic mirrors and the moveable reflector means comprises a piston mirror.

REFERENCES:
patent: 3782803 (1974-01-01), Buck
patent: 3950712 (1976-04-01), Chenausky et al.
patent: 4049945 (1977-09-01), Ehlscheid et al.
patent: 4065732 (1977-12-01), Scammell
patent: 4087162 (1978-05-01), Kuffer
patent: 4117319 (1978-09-01), White, III
patent: 4164366 (1979-08-01), Sziklas et al.
patent: 4190814 (1980-02-01), VanWorkum
patent: 4249140 (1981-02-01), Frieberg
patent: 4420836 (1983-12-01), Harper

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