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arXiv · 1108.4819

Force-insensitive optical cavity

Stephen Webster·Patrick Gill
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Abstract

We describe a rigidly-mounted optical cavity which is insensitive to inertial forces acting in any direction and to the compressive force used to constrain it. The design is based on a cubic geometry with four supports placed symmetrically about the optical axis in a tetrahedral configuration. To measure the inertial force sensitivity, a laser is locked to the cavity while it is inverted about three orthogonal axes. The maximum acceleration sensitivity is 2.5\times10^-11/g (where g=9.81 ms^-2), the lowest passive sensitivity to be reported for an optical cavity.

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Stephen Webster, Patrick Gill. 2011-08-24. Force-insensitive optical cavity. https://doi.org/10.1364/ol.36.003572

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