Laser force-measuring system biasing

Details Laser force-measuring system biasing Laser force-measuring system biasing

1978-05-03

1979-05-22

Goldstein, Herbert

Measuring and testing

Volumetric content measuring

356350, 73382R, 73517R, 331DIG1, 356 33, G01F 124, G01P 1508, G01V 704

Patent

active

041552512

ABSTRACT:
A biasing element for use in a force-measuring system employing a circularly polarized ring laser. The biasing element is a pre-stressed photoelastic element placed in the path of the laser beam to generate a steadystate frequency difference at the output of the beat detector. In a preferred form, the biasing element is pre-stressed by bonding to a second photoelastic element and a second ring laser is positioned to detect the torque in the second element to allow monitoring of any changes in the bias level.

REFERENCES:
patent: 3786681 (1974-01-01), Kiehn
patent: 3927946 (1975-12-01), McClure

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