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Optical Engineering

The Ring Laser
Author(s): Shaoul Ezekiel
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Paper Abstract

The use of the laser for the measurement of inertial rotation was recognized by Adolf Rosenthal in August 1961, only a few months after Javan's announcement of the first cw laser. Rosenthal showed that the sensitivity of the Sagnac rotation interferometer could be improved by many orders of magnitude by the use of laser principles to convert path length changes to frequency changes. He proposed a ring-type laser resonator which can support two counter rotating laser beams; any path difference between the clockwise and counter-clockwise cavity length introduced by inertial rotation would cause a frequency difference between the counter-rotating laser beams that is proportional to the rate of rotation.

Paper Details

Date Published: 1 December 1974
PDF: 16 pages
Opt. Eng. 13(6) 136217 doi: 10.1117/12.7978725
Published in: Optical Engineering Volume 13, Issue 6
Show Author Affiliations
Shaoul Ezekiel, M.I.T. (United States)

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