We for the first time present designs of high-Q photonic crystal nanocavities in the cases previously rendered ldquoimpossiblerdquo, including an ultra-high Q dual-polarized nanocavities, high Q/V cavities based on low-index materials, and high-Q air-band-mode cavities.
Using a tapered photonic crystal cavity approach we designed cavities with theoretical Quality factors Q=2times107 and measured experimental Q=7.5times105. Non-linear broadening of the cavity resonance has also been observed.
We theoretically demonstrate high fidelity frequency conversion of a photon generated by a dipole-like emitter in a double mode nonlinear cavity irradiated by a classical field, and propose a realistic photonic crystal nanocavity implementation.
The second harmonic radiation emitted into the top half space from three dimensionally localized modes of L3 defect cavities in InP-based planar photonic crystals is studied using both CW and pulsed excitation. The far field harmonic radiation patterns observed from modes with resonant wavelengths ~ 1550 nm, excited by a tunable CW laser with less than 1 mW power, reveal strong local field enhancement...
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