Self-induced oscillations in an optomechanical system driven by bolometric backaction.
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. The backaction induced by the bolometric light force produces negative damping such that the system enters a regime of nonlinear oscillations. We study the ensuing attractor diagram describing the nonlinear dynamics. A theory is presented that yields quantitative agreement with experimental results. This includes the observation of a regime where two mechanical modes of the cantilever are excited simultaneously.
Center for NanoScience and Department of Physics, Ludwig-Maximilians-Universität München, Munich, Germany.
Constanze
C
Metzger
Max
M
Ludwig
Clemens
C
Neuenhahn
Alexander
A
Ortlieb
Ivan
I
Favero
Khaled
K
Karrai
Florian
F
Marquardt