Optically biased twin ring laser gyroscope
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United States of America Patent
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Oct 14, 1986
Grant Date -
N/A
app pub date -
Apr 20, 1983
filing date -
Apr 20, 1983
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An improved ring laser rotational rate sensor includes a pair of lasing cavities, each of which is comprised of a non-planar arrangement of four cavity segments. Common gain and biasing media are associated with closely-spaced segments of the two cavities. The non-planar cavity geometry supports only circularly optically polarized lasing modes thereby requiring no intracavity elements for optical biasing and eliminating the need for dithering of mirrors to control optical path length.
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