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Berlin 2008 – scientific programme

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DY: Fachverband Dynamik und Statistische Physik

DY 9: Nonlinear dynamics, synchronization and chaos I

DY 9.1: Talk

Monday, February 25, 2008, 17:00–17:15, MA 004

Self-induced oscillations in an optomechanical system — •Clemens Neuenhahn1,2, Maximilian Ludwig1,2, Constanze Metzger3, Alexander Ortlieb2, Ivan Favero4, Khaled Karrai2, and Florian Marquardt1,21Arnold-Sommerfeld Center for Theoretical Physics — 2Center for Nanoscience and Departement of Physics, Ludwig-Maximilians Universität München, Munich, Germany — 3Boston University, Electrical and Computer Engineering, Boston, MA 02215, USA — 4Université Paris Diderot, Laboratoire Matériaux et Phénomènes Quantiques, Bâtiment Condorcet, 75205 Paris CEDEX 13

We have explored the nonlinear dynamics of an optomechanical system consisting of an illuminated Fabry-Perot cavity, one of whose end-mirrors is attached to a vibrating cantilever. Such a system can experience negative light-induced damping and enter a regime of self-induced oscillations. We present a systematic experimental and theoretical study of the ensuing attractor diagram in an experimental setup where the oscillation amplitude becomes large, and the mirror motion is influenced by several optical modes. A theory has been developed that yields detailed quantitative agreement with experimental results. This includes the observation of a regime where two mechanical modes of the cantilever are excited simultaneously.

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