8,656 research outputs found
Simultaneous radiation pressure induced heating and cooling of an opto-mechanical resonator
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
Opto-Acoustic Oscillator Using Silicon Mems Optical Modulator
We show operation of a silicon MEMS based narrow-band optical modulator with
large modulation depth by improving the electro-mechanical transducer. We
demonstrate an application of the narrowband optical modulator as both the
filter and optical modulator in an opto-electronic oscillator loop to obtain a
236.22 MHz Opto-Acoustic Oscillator (OAO) with phase noise of -68 dBc/Hz at 1
kHz offset
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