期刊
APPLIED PHYSICS LETTERS
卷 83, 期 13, 页码 2542-2544出版社
AMER INST PHYSICS
DOI: 10.1063/1.1614832
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Very high photoluminescence extraction is observed from defectless two-dimensional photonic crystals etched in the upper 200-nm-thick silicon layer of a silicon-on-insulator (SOI) substrate. Predicted very low group velocity modes near the Gamma point of the band structure lying above the light line are used to extract light from the photonic crystal slab into the free space. It is found that light is extracted on a 80-nm-wide band along directions near to the perpendicular to the slab, with an extraction enhancement up to 70 compared to an unpatterned SOI. (C) 2003 American Institute of Physics.
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