Ring laser, particularly for a ring laser type of gyro

Details Ring laser, particularly for a ring laser type of gyro Ring laser, particularly for a ring laser type of gyro

1985-03-29

1987-04-14

Willis, Davis L.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

372 94, G01C 1964, H01S 3083

Patent

active

046573917

ABSTRACT:
A ring laser particularly for a ring laser type of gyro in which the ring ser includes three corner mirrors and a separate gas discharge tube arranged in a recess in a block. The gas discharge tube is mounted on the block longitudinally of the beam path by at least one piezo electric drive. The modulation amplitude of the separated beam portion is measured by a control circuit and is converted into a high voltage adjustment signal for the drive as a function of the modulation amplitude. Two drives may be spaced apart in the longitudinal direction of the gas discharge tube and these can be controlled independently of each other. Although the beam path may be displaced as a result of thermal expansion and/or bending of the block, the gas discharge tube may be kept exactly coaxial with the beam which traverses it.

REFERENCES:
patent: 4386853 (1983-06-01), Ljung
patent: 4432646 (1984-02-01), Rodloff et al.

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