Multioscillator ring laser gyro beam combining optics

Details Multioscillator ring laser gyro beam combining optics Multioscillator ring laser gyro beam combining optics

1987-10-01

1995-05-30

Moskowitz, Nelson

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

372 94, G01C 1964, G01B 902

Patent

active

054206839

ABSTRACT:
Multioscillator beam-combining optics having prisms for processing both clockwise and anticlockwise elliptically polarized beams having both helicities transmitted through a partly transmissive corner mirror. The optical structure uses a thin-film polarizer with a waveplate which is not necessarily a quarter wave plate. Further, the waveplate thickness is determined so that one component of elliptically polarized light is converted into a linearly polarized beam. A thin film polarizer then blocks the linearly polarized beam. The waveplate principal crystal axes form a nominally forty five degree angle with the s and p polarization axes. Techniques are used to keep extraneous birefringence of the beams to a minimum.

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Hildum et al., "New Average-Power Damage . . . LLNL", Oct. 26, 1987, NTIS AN DE 88006231/XAB, 18 pp., abst. only.

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