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Published April 1, 2004 | public
Journal Article Open

High quality factors and room-temperature lasing in a modified single-defect photonic crystal cavity


We propose and analyze a new photonic crystal cavity design that supports a dipole mode with a quality factor greater than 20,000. Such a high quality factor is obtained by precise tuning of the cavity length with minimal disruption of the surrounding photonic crystal. A fabrication procedure based on dry etching of InGaAsP material in HI/H2/Ar is used to demonstrate photonic crystal lasers with smooth and straight sidewalls. These room-temperature lasers concentrate optical energy in air and are suitable for use as tunable lasers and chemical sensors.

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© 2004 Optical Society of America. Received October 7, 2003. The authors acknowledge interaction with Will Green and Tomo Yoshie from Caltech and Sam Keo from the Jet Propulsion Laboratory. Generous support by the U.S. Air Force Office of Scientific Research (G. Pomrenke) and the Defense Advanced Research Projects Agency (J. Shah) is also acknowledged.


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