Controlling mode locking in optical ring cavities |
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Authors: | G Krenz S Bux S Slama C Zimmermann PW Courteille |
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Institution: | 1.Physikalisches Institut,Eberhard-Karls-Universit?t Tübingen,Tübingen,Germany |
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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.
PACS 42.60.Da; 45.40.Cc; 42.79.Bh; 42.55.-f |
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