Simultaneous radiation pressure induced heating and cooling of an opto-mechanical resonator

Details Simultaneous radiation pressure induced heating and cooling of an opto-mechanical resonator Simultaneous radiation pressure induced heating and cooling of an opto-mechanical resonator

2012-02-14

arxiv.org/abs/1202.3154v1

Physics

Optics

Scientific paper

10.1063/1.3694772

Cavity opto-mechanics enabled radiation-pressure coupling between optical and mechanical modes of a micro-mechanical resonator gives rise to dynamical backaction, enabling amplification and cooling of mechanical motion. Due to a combination of large mechanical oscillations and necessary saturation of amplification, the noise floor of the opto-mechanical resonator increases, rendering it ineffective at transducing small signals, and thereby cooling another mechanical resonance of the system. Here we show amplification of one mechanical resonance in a micro-mechanical ring resonator while simultaneously cooling another mechanical resonance by exploiting two closely spaced optical whispering gallery mode cavity resonances.

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