High efficiency laser spectrum conditioner

Details High efficiency laser spectrum conditioner High efficiency laser spectrum conditioner

1978-10-04

1980-11-25

Evans, F. L.

Oscillators

Relaxation oscillators

331 945C, G02B 518

Patent

active

042355184

ABSTRACT:
A high efficiency laser spectrum conditioner for generating a collinear parallel output beam containing a predetermined set of frequencies from a multifrequency laser. A diffraction grating and spherical mirror are used in combination, to disperse the various frequencies of the input laser beam and direct these frequencies along various parallel lines spatially separated from one another to an apertured mask. Selection of the desired frequencies is accomplished by placement of apertures at locations on the mask where the desired frequencies intersect the mask. A recollimated parallel output beam with the desired set of frequencies is subsequently generated utilizing a mirror and grating matched and geometrically aligned in the same manner as the input grating and mirror.

REFERENCES:
patent: 2652742 (1953-09-01), Walsh
patent: 3443243 (1969-05-01), Patel
patent: 3586442 (1971-06-01), Tripp
patent: 3865490 (1975-02-01), Grossman
patent: 3907430 (1975-09-01), Mann
patent: 4009391 (1977-02-01), Janes et al.

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