Coherent light generators – Particular resonant cavity – Folded cavity
Patent
1992-05-29
1993-11-09
Epps, Georgia Y.
Coherent light generators
Particular resonant cavity
Folded cavity
356350, H01S 3083, G01C 1964
Patent
active
052609626
ABSTRACT:
A lightweight ring laser gyro (RLG) for vehicles including space vehicles is provided wherein the housing of such RLG, instead of being made of relatively heavy ULE glass, is made of low density silica aerogel having a density of from 600 to 1000 mg/cc. Further, where the prior art RLGs have three laser triangles, each mounted in one of three blocks, which blocks are mounted on separate orthogonal sides of a housing, the RLG of the present invention employs but one block with all three laser triangles orthogonally machined therein for a considerable size reduction or compactness and a further weight savings. The RLG of the invention can be attached to, e.g. space vehicles, including satellites for guidance and monitoring thereof. Also, the substrates of mirrors mounted on such RLG can also be made of LD aerogels for a further weight savings not seen in the prior art.
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Epps Georgia Y.
Singer Donald J.
Stover Thomas C.
The United States of America as represented by the Secretary of
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