Observation of opto-mechanical multistability in a high Q torsion balance oscillator
arXiv:0709.2867 · doi:10.1103/PhysRevA.77.031802
Abstract
We observe the opto-mechanical multistability of a macroscopic torsion balance oscillator. The torsion oscillator forms the moving mirror of a hemi-spherical laser light cavity. When a laser beam is coupled into this cavity, the radiation pressure force of the intra-cavity beam adds to the torsion wire's restoring force, forming an opto-mechanical potential. In the absence of optical damping, up to 23 stable trapping regions were observed due to local light potential minima over a range of 4 micrometer oscillator displacement. Each of these trapping positions exhibits optical spring properties. Hysteresis behavior between neighboring trapping positions is also observed. We discuss the prospect of observing opto-mechanical stochastic resonance, aiming at enhancing the signal-to-noise ratio (SNR) in gravity experiments.
arXiv comment4 pages, 5 figures
References in corpus (6)
- Cooling of a micro-mechanical oscillator using radiation pressure induced dynamical back-action
- Cooling of a mirror by radiation pressure
- An all-optical trap for a gram-scale mirror
- Coherent Signal Amplification in Bistable Nanomechanical Oscillators by Stochastic Resonance
- Measurement of radiation-pressure-induced optomechanical dynamics in a suspended Fabry-Perot cavity
- Application of stochastic resonance in gravitational-wave interferometer
Cited by in corpus (9)
- Synchronization of many nano-mechanical resonators coupled via a common cavity field
- Equivalence between an optomechanical system and a Kerr medium
- Atto-Nm Torque Sensing with a Macroscopic Optomechanical Torsion Pendulum
- Quantum sensing with milligram scale optomechanical systems
- Testing the quantum nature of gravity without entanglement
- Optomechanical Stochastic Resonance in a Macroscopic Torsion Oscillator
- Coupling a small torsional oscillator to large optical angular momentum
- Noise-induced temporal regularity and signal amplification in an optomechanical system with parametric instability
- Feedback-induced Bistability of an Optically Levitated Nanoparticle: A Fokker-Planck Treatment