Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE

Single quantum dot emission after resonant excitation

Takashi Kuroda, K. Kuroda, Kazuaki Sakoda, Katsuyuki Watanabe, Nobuyuki Koguchi, Giyuu Kido

Published Feb 9, 2006• 1 citation

Abstract

Photoluminescence from a single semiconductor quantum dot after perfect resonant excitation has been temporally resolved with picosecond time resolution. Making use of non-confocal geometry for the micro photoluminescence setup, we can greatly remove the elastic scattering component, and successfully capture the resonantly-excited spontaneous emission from a single quantum dot. The emission intensity as a function of coherent photoinjection shows peculiar oscillatory dependence, i.e., Rabi oscillations of ground-state excitons. The transition strength of the groundstate exciton is precisely determined through the analysis. The value indicates a good agreement with that expected by the radiative decay rate of the quantum dots.

DOI: 10.1117/12.644477

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