Sensing dispersive and dissipative forces by an optomechanical cavity
Department of Electrical Engineering, Technion - Haifa 32000 Israel
Received: 11 July 2016
Accepted: 15 July 2016
We experimentally study an optomechanical cavity that is formed between a mechanical resonator, which serves as a movable mirror, and a stationary on-fiber dielectric mirror. A significant change in the behavior of the system is observed when the distance between the fiber's tip and the mechanical resonator is made smaller than about . The combined influence of Casimir force, Coulomb interaction due to trapped charges, and optomechanical coupling is theoretically analyzed. The comparison between experimental results and theory yields a partial agreement.
PACS: 46.40.-f – Vibrations and mechanical waves / 05.45.-a – Nonlinear dynamics and chaos / 65.40.De – Thermal expansion; thermomechanical effects
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