Silicon-based photonic crystal nanocavity light emitters

Details Silicon-based photonic crystal nanocavity light emitters Silicon-based photonic crystal nanocavity light emitters

2006-09-07

arxiv.org/abs/physics/0609060v1

Applied Physics Letters 89, 221101 (2006)

Physics

Optics

5 pages, 2 figures

Scientific paper

10.1063/1.2396903

We have demonstrated an up to seven-fold enhancement of photoluminescence from silicon-rich silicon nitride film due to a single photonic crystal cavity. The enhancement is partially attributed to the Purcell effect. Purcell factor predicted by FDTD calculations is 32 for a linear three-defect cavity mode with computed quality factor of 332 and mode volume of 0.785 cubic wavelengths. Experimentally measured cavity quality (Q) factors vary in the range of 200 to 300, showing excellent agreement with calculations. The emission peak can be tuned to any wavelength in the 600 to 800 nm range.

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