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Two-Dimensional Photonic Band-Gap Defect Mode Laser

Research Area: Nanophotonics Year: 1999
Type of Publication: Article Keywords: photonic crystal, semiconductor laser, Purcell factor, optical microcavity, photonic bandgap
Authors: Painter, Oskar; Lee, R. K.; Scherer, Axel; Yariv, A.; O'Brien, J. D.; Dapkus, P. D.; Kim, I.
Journal: Science Volume: 284
Number: 5421 Pages: 1819-1822
Month: June
A laser cavity formed from a single defect in a two-dimensional photonic crystal is demonstrated. The optical microcavity consists of a half wavelength-thick waveguide for vertical confinement and a two-dimensional photonic crystal mirror for lateral localization. A defect in the photonic crystal is introduced to trap photons inside a volume of 2.5 cubic half-wavelengths, approximately 0.03 cubic micrometers. The laser is fabricated in the indium gallium arsenic phosphide material system, and optical gain is provided by strained quantum wells designed for a peak emission wavelength of 1.55 micrometers at room temperature. Pulsed lasing action has been observed at a wavelength of 1.5 micrometers from optically pumped devices with a substrate temperature of 143 kelvin.
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