Optically biased twin ring laser gyroscope

Details Optically biased twin ring laser gyroscope Optically biased twin ring laser gyroscope

1983-04-20

1986-10-14

McGraw, Vincent P.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

372 94, G01C 1964

Patent

active

046169300

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.

REFERENCES:
patent: 3468608 (1969-09-01), Doyle
patent: 3826575 (1974-07-01), Walter, Jr.
patent: 4229106 (1980-10-01), Dorschner et al.
patent: 4521110 (1985-06-01), Roberts et al.

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