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arXiv · 1505.05445

A continuously tunable modulation scheme for precision control of optical cavities with variable detuning

William Yam·Emily Davis·Sarah Ackley·Matthew Evans·Nergis Mavalvala
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Abstract

We present a scheme for locking optical cavities with arbitrary detuning many line widths from resonance using an electro-optic modulator that can provide arbitrary ratios of amplitude to phase modulation. We demonstrate our scheme on a Fabry-Perot cavity, and show that a well-behaved linear error signal can be obtained by demodulating the reflected light from a cavity that is detuned by several line widths.

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William Yam, Emily Davis, Sarah Ackley, Matthew Evans, Nergis Mavalvala. 2015-05-20. A continuously tunable modulation scheme for precision control of optical cavities with variable detuning. https://doi.org/10.1364/ol.40.003675

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