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Proceedings Paper

Theoretical study of a quantum dot microcavity laser
Author(s): Guangcun Shan; Shuying Bao
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Paper Abstract

Here we theoretically investigate a new laser device structure model based on a single semiconductor quantum dot (QD) gain emitter, where the lasing occurs through discrete conduction states. A single QD is selectively placed in a high quality microcavity, called a microdisk, which is resonant with an intersublevel QD transition. The quantitative results of fully quantum-mechanical treatment here show that, when adjusting the QD-cavity coupling parameters to be appropriate values, the microcavity coupling mode would lead to a very high photon intensity of the single QD microcavity laser. The QD-cavity coupling interaction is modeled in the strong-coupling regime, and we conclude that the present QD microcavity system itself can serve as a new novel terahertz laser with low threshold.

Paper Details

Date Published: 11 January 2007
PDF: 7 pages
Proc. SPIE 6279, 27th International Congress on High-Speed Photography and Photonics, 627925 (11 January 2007); doi: 10.1117/12.725218
Show Author Affiliations
Guangcun Shan, Fudan Univ. (China)
Nanyang Technological Univ., Singapore (Singapore)
Shuying Bao, Fudan Univ. (China)


Published in SPIE Proceedings Vol. 6279:
27th International Congress on High-Speed Photography and Photonics

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