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A drastic Q factor variation from 7900 to 1200 is observed in a silicon ring resonator loaded by micrometer-scale graphene with various lengths. The significant decay of the Q factor agrees with a numerical analysis.
We observe experimentally a transition of quality factor scaling from third power to fifth power of the number of periods in periodic silicon optical waveguides designed to exhibit a degenerate band edge.
We propose an on-chip nano-horm-shaped metal-clad cavity. The proposed device is 0.8 µm in height-half the size of the previously reported devices— and achieves the quality factor of 1000 and effective volume of 0.31(λ/n)3.
We present a statistical analysis of the spontaneous emission of quantum dots coupled to Anderson-localized cavities in disordered photonic-crystal waveguides.We observe an average Purcell factor of ∼ 5 with a maximum value of 24.
Optical nanocavities (racetrack resonators and photonic crystal cavities) are fabricated in bulk single-crystal diamond via angled-etching. Devices operating in the telecom band exhibited Q-factors exceeding 105, while devices in the visible yielded Q-factors approaching 104.
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