Compositions – Radioactive compositions – Nuclear reactor fuel
Patent
1990-10-17
1991-07-09
Arnold, Bruce Y.
Compositions
Radioactive compositions
Nuclear reactor fuel
252588, 350378, 350390, 372703, G02F 109
Patent
active
050299530
ABSTRACT:
An ultraviolet optical isolater which utilizes a KDP-isomorph crystal as optical element is disclosed. In a preferred embodiment, the ultraviolet optical isolator comprises: an input polarizer for linearly polrizing an input beam of ultraviolet light in a first plane of polarization; means for rotating the plane of polarization of the linarly polarized ultraviolet light from the input polarizer by substantially 45 degrees in a first direction; a Faraday rotator including an optical element made of a KDP-isomorph crystal in which the plane of polarization of the rotated linearly polarized ultraviolet light from the rotating means is rotated about an optical axis of the optical element, a plurality of permanent magnets sequentially coupled together with altnerating polarities for developing a magnetic field along the optical axis of the optical element in order to cause the optical element to rotate the plane of polarization of the rotated linearly polarized ultraviolet light from the rotating means by substantially another 45 degrees in the first direction to a second plane of polarization substantially orthogonal to the first plane of polarization, and means for moving the optical element so that the optical element is always enclosed by the plurality of permanent magnets; and an output polarizer for outputting the ultraviolet light in the second plane of polarization.
REFERENCES:
patent: 3663087 (1972-05-01), Guillet et al.
patent: 3675125 (1972-07-01), Jaeckun
patent: 3757247 (1973-09-01), Giallorenzi et al.
patent: 4059759 (1977-11-01), Harney et al.
patent: 4196396 (1980-04-01), Smith
patent: 4804256 (1989-02-01), Wilson
Cooper David G.
Dexter James L.
Landry Joseph E.
Reintjes, Jr. John F.
Arnold Bruce Y.
Jameson George
Lerner Martin
McDonnell Thomas E.
The United States of America as represented by the Secretary of
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