Tunable linear and quadratic optomechanical coupling for a tilted membrane within an optical cavity: theory and experiment

Details Tunable linear and quadratic optomechanical coupling for a tilted membrane within an optical cavity: theory and experiment Tunable linear and quadratic optomechanical coupling for a tilted membrane within an optical cavity: theory and experiment

2011-12-27

arxiv.org/abs/1112.6002v1

Physics

Quantum Physics

10 pages, 6 figures

Scientific paper

We present an experimental study of an optomechanical system formed by a vibrating thin semi-transparent membrane within a high-finesse optical cavity. We show that the coupling between the optical cavity modes and the vibrational modes of the membrane can be tuned by varying the membrane position and orientation. In particular we demonstrate a large quadratic dispersive optomechanical coupling in correspondence with avoided crossings between optical cavity modes weakly coupled by scattering at the membrane surface. The experimental results are well explained by a first order perturbation treatment of the cavity eigenmodes.

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