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Room-temperature emission at telecom wavelengths from silicon photonic crystal nanocavities
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View: Figures


Image of FIG. 1.
FIG. 1.

Room-temperature spectra of modified L3 PhC nanocavities with (top curve), 0 nm (middle curve), and (bottom curve). Curves are shifted vertically for clarity. Inset shows a SEM image of the PhC nanocavity with . Dashed circles indicate the modified holes.

Image of FIG. 2.
FIG. 2.

Broadband room-temperature spectra of L3 nanocavity with , reference PhC membrane, unpatterned Si membrane, and reference Cz-Si sample. Excitation power is in all cases. The sharp drop at 1620 nm, common to all spectra, is due to the detector cutoff. The top panel shows the calculated spectrum, including cavity resonances and PhC band edges.

Image of FIG. 3.
FIG. 3.

(a) intensity, Q-factor, and (b) resonance wavelength of the L3 cavity with as a function of the excitation power.

Image of FIG. 4.
FIG. 4.

(a) Temperature-dependent PL intensity of the modified L3 nanocavity for on-resonance wavelength (open circles) and off-resonance by (full circles). (b) Arrhenius plots of the high-temperature PL tails for on-resonance (open circles) and off-resonance (full circles) wavelengths. Dashed lines are linear fits to experimental data.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Room-temperature emission at telecom wavelengths from silicon photonic crystal nanocavities