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Published July 15, 1992 | Published
Journal Article Open

Resonance-enhanced spontaneous emission from quantum dots


Enhanced and inhibited spontaneous emission from a pointlike quantum dot embedded in a finite dielectric sphere are treated classically. Numerical results given for a GaAs quantum dot embedded in an Al_(0.4)Ga_(0.6)As sphere show the spontaneous emission rate is decreased by a factor of 80 when the radius of the sphere is small compared to the wavelength of emitted light. When the radius of the sphere is comparable to the wavelength, the spontaneous emission rate depends strongly on the radius. Sharp resonances, related to Mie resonances, with enhancements up to a factor of 100, are found in some cases.

Additional Information

© 1992 American Institute of Physics. Received 3 January 1992; accepted 8 April 1992. Helpful discussions with Peter Sercel, John Lebens, and Charles Tsai are acknowledged. This work was supported by the NSF (CTS-8912328).

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