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Controlling mode locking in optical ring cavities

G. Krenz·S. Bux·S. Slama·C. Zimmermann·Ph. W. Courteille
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Abstract

Imperfections in the surface of intracavity elements of an optical ring resonator can scatter light from one mode into the counterpropagating mode. The phase-locking of the cavity modes induced by this backscattering is a well-known example that notoriously afflicts laser gyroscopes and similar active systems. We experimentally show how backscattering can be circumvented in a unidirectionally operated ring cavity either by an appropriate choice of the resonant cavity mode or by active feedback control.

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G. Krenz, S. Bux, S. Slama, C. Zimmermann, Ph. W. Courteille. 2006-11-20. Controlling mode locking in optical ring cavities. https://doi.org/10.1007/s00340-007-2632-8

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