Radio frequency regenerative oscillations in monolithic high-Q/V heterostructured photonic crystal cavities

Abstract

We report temporal and spectral domain observation of regenerative oscillation in monolithic silicon heterostructured photonic crystals cavities with high quality factor to mode volume ratios (Q/V). The results are interpreted by nonlinear coupled mode theory (CMT) tracking the dynamics of photon, free carrier population and temperature variations. We experimentally demonstrate effective tuning of the radio frequency (RF) tones by laser-cavity detuning and laser power levels, confirmed by the CMT simulations with sensitive input parameters.

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• Optical modulation of coherent phonon emission in optomechanical cavities
• Slow thermo-optomechanical pulsations in suspended 1D photonic crystal nanocavities