Laser beam stop

Details Laser beam stop Laser beam stop

1988-06-27

1990-07-10

Arnold, Bruce Y.

Coherent light generators

Particular component circuitry

Optical pumping

350319, 372103, G02B 2746, G02B 2758

Patent

active

049403087

ABSTRACT:
A soft-edge stop for a laser beam includes a passing zone, a transition zone and a blocking zone. The transition zone includes a diffraction grating the diffraction efficiency of which varies progressively between a first value adjacent the passing zone and a second value adjacent the blocking zone. The passing zone may be clear, transmissive diffractive or reflective diffractive and the transition zone would be transmissive reflective in the first two cases and reflective diffractive in the third case.

REFERENCES:
patent: 3286193 (1966-11-01), Koester et al.
patent: 3578849 (1971-05-01), Guillet
patent: 3935545 (1976-01-01), Campillo et al.
patent: 3980397 (1976-09-01), Judd et al.
patent: 4108621 (1978-08-01), Asahara et al.
patent: 4469407 (1984-09-01), Cowan et al.
patent: 4633171 (1986-12-01), Storck et al.
Quintanilla et al., "Holographic Filter that Transforms a Gaussian into a Uniform Beam"; Applied Optics, vol. 20, No. 5; Mar. 1981; pp. 879-880.

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