Coherent light generators – Particular resonant cavity – Specified cavity component
Patent
1996-04-16
1997-12-23
Healy, Brian
Coherent light generators
Particular resonant cavity
Specified cavity component
372 98, 372106, 372107, 359839, H01S 308, G02B 510
Patent
active
057013268
ABSTRACT:
An optical system transmits a first radiation beam along a first axis and receives a reflected beam along that axis; the first beam having a first wavelength and a p-planar polarization; the second beam having the first wavelength, a p-planar polarized component, an s-planar polarized component, and a greater cross-sectional area than the first beam. The system includes a transmit/reflect mirror positioned at a 45.degree. to the first axis and free of apertures in its optical area, a radiation source, an element for directing radiation from the source along the first axis toward the mirror; an element for directing radiation outwardly from the mirror along the first axis, and for directing the second beam along the first axis toward the mirror. An antireflection coating on the primary side of the mirror passes radiation having the first wavelength and a p-planar polarization. An inner area of a coating on the secondary side of the mirror passes substantially all of the p-planar polarization radiation while reflecting s-planar polarization radiation. An outer area of the secondary coating reflects substantially all radiation incident thereon having the first wavelength.
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Healy Brian
Loral Vought Systems Corporation
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