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Conference on Lasers and Electro-Optics

Back-action evading devices with cavities and second-order nonlinearities

M. D. Levenson, Robert M. Shelby, Hans‐A. Bachor, Stephen H. Perlmutter

Published Apr 25, 1988• 0 citations
OpenAlex

Abstract

Conventional devices for measuring the amplitude of a lightwave absorb the light, thus destroying it. Recently, methods based on the optical Kerr effect have been shown capable of measuring optical amplitude fluctuations with near-quantum-limited sensitivity without absorption.1

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We theoretically study both the technical and the fundamental quantum limitations of the sensitivity of a resonant optical gyroscope based on a high finesse optical cavity. We show that the quantum back action associated with the resonantly enhanced optical cross and self-phase modulation results in the nonlinear optics-mediated standard quantum limit (SQL) of the angle random walk of the gyroscope. We also found that the measurement sensitivity of a generic optical gyroscope is fundamentally limited due to the opto-mechanical properties of the device. Ponderomotive action of the light interrogating the gyroscope cavity leads to the opto-mechanical SQL of the rotation angle detection. The uncorrelated quantum fluctuations of power of clockwise and counterclockwise light waves result in optical power-dependent uncertainty of the angular gyroscope position.