Abstract
Thermal nonlinearity is known to cause bistability in Whispering Gallery Mode (WGM) resonators and to destabilize the red slope of the Lorentzian resonant curve. We demonstrate an optical technique that allows compensation of the thermal effect and forces the resonances to appear linear with both red and blue slopes stable.
Highlights
Whispering Gallery Mode (WGM) resonators have numerous applications in science and technology [1], including cavity QED [2,3], cavity optomechanics [4] nonlinear optics [5,6,7] and biosensing [8]
Attempts have been made to cancel or reduce the thermal effect [11,12] at the expense of the optical quality factor. In this contribution we demonstrate a technique that allows one to cancel thermal nonlinearity in a WGM of choice using another WG mode in the same resonator as a stabilizer
We demonstrate the method by cooling a mechanical mode of the resonator through red detuning of a pump wave
Summary
Whispering Gallery Mode (WGM) resonators have numerous applications in science and technology [1], including cavity QED [2,3], cavity optomechanics [4] nonlinear optics [5,6,7] and biosensing [8]. Attempts have been made to cancel or reduce the thermal effect [11,12] at the expense of the optical quality factor. In this contribution we demonstrate a technique that allows one to cancel thermal nonlinearity in a WGM of choice using another WG mode in the same resonator as a stabilizer. We demonstrate the method by cooling a mechanical mode of the resonator through red detuning of a pump wave
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