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Title: Simplified readout optics for a ring laser apparatus

Abstract

This patent describes a ring laser angular rate sensor comprising: a laser block for providing a ring laser path for first and second counter-propagating laser beams through interconnecting channels; and a readout having, a substrate including at least first, second, third surfaces, having portions bonded to the block in proximity to the interconnecting channels, with second surface at an acute angle relative to the first surface. The beam splitter means is supported for reflecting a major portion of first and second laser beams impinging on the beam splitter from one of the channels into an adjacent channel. It transmits a smaller portion of the first beam into the substrate to exit through the third surface, and transmits a smaller portion of the second beam into the substrate toward the second surface. The reflection means, supported on the second surface through the substrate to impinge on the beam splitter; and the beam splitter means comprises means for reflecting a portion of the beam reflected from the reflection means toward the third surface and adjacent to the portion of the first beam that is transmitted through the beam splitter means. The acute angle is selected to cause the first and second beammore » portions to exit through the third surface and closely adjacent to each other to produce interference fringes.« less

Inventors:
Publication Date:
OSTI Identifier:
6288496
Patent Number(s):
US 4677641
Assignee:
Honeywell Inc., Minneapolis, MN
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 26 Oct 1984
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; RING LASERS; OPTICS; READOUT SYSTEMS; BEAM SPLITTING; BONDING; INCIDENCE ANGLE; INTERFERENCE; LASER RADIATION; REFLECTION; SUBSTRATES; SURFACES; ELECTROMAGNETIC RADIATION; FABRICATION; JOINING; LASERS; RADIATIONS; 420300* - Engineering- Lasers- (-1989)

Citation Formats

Podgorski, T J. Simplified readout optics for a ring laser apparatus. United States: N. p., 1987. Web.
Podgorski, T J. Simplified readout optics for a ring laser apparatus. United States.
Podgorski, T J. Tue . "Simplified readout optics for a ring laser apparatus". United States.
@article{osti_6288496,
title = {Simplified readout optics for a ring laser apparatus},
author = {Podgorski, T J},
abstractNote = {This patent describes a ring laser angular rate sensor comprising: a laser block for providing a ring laser path for first and second counter-propagating laser beams through interconnecting channels; and a readout having, a substrate including at least first, second, third surfaces, having portions bonded to the block in proximity to the interconnecting channels, with second surface at an acute angle relative to the first surface. The beam splitter means is supported for reflecting a major portion of first and second laser beams impinging on the beam splitter from one of the channels into an adjacent channel. It transmits a smaller portion of the first beam into the substrate to exit through the third surface, and transmits a smaller portion of the second beam into the substrate toward the second surface. The reflection means, supported on the second surface through the substrate to impinge on the beam splitter; and the beam splitter means comprises means for reflecting a portion of the beam reflected from the reflection means toward the third surface and adjacent to the portion of the first beam that is transmitted through the beam splitter means. The acute angle is selected to cause the first and second beam portions to exit through the third surface and closely adjacent to each other to produce interference fringes.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1987},
month = {6}
}