External scatter removal system

Details External scatter removal system External scatter removal system

1990-12-12

1995-01-24

Buczinski, Stephen C.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

372 94, G01B 902, H01S 3083

Patent

active

053846362

ABSTRACT:
Disclosed herein is an External Scatter Removal System for Ring Laser Gyroscopes (such as a Split Gain Multioscillator) comprising a prism mounted on an optoisolator, wherein light transmitted out at least one of the mirrors of the Gyroscope passes into the prism and detector system, while oppositely directed backscattered light from the prism components is not returned to the gyroscope frame's internal optical path, thereby limiting any appreciable backscatter from interfering with an accurate measurement of the rotation rate of the gyroscope.

REFERENCES:
patent: 4449824 (1984-05-01), Matthews
patent: 4818087 (1989-04-01), Dorschner
patent: 4923299 (1990-05-01), Anderson et al.
A. Faraday Effect Optical Isolator; L. J. Aplet and J. W. Carson; Applied Optics, vol. 3, No. 4, Apr., 1964; pp. 544-545.
The Faraday Optical Isolator; G. Fischer; Journal of Optical Communications; 1987; pp. 18-21.
Optics; Eugene Hecht/Alfred Zajac; Addison-Wesley Series in Physics; Feb., 1979; pp. 261-263.
TGG Terbium Gallium Garnet; Litton Airtron Synoptics.

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