Zhao, B. and Chen, T. R. and Yariv, A. (1993) A comparison of amplitude-phase coupling and linewidth enhancement in semiconductor quantum-well and bulk lasers. IEEE Journal of Quantum Electronics, 29 (4). pp. 1027-1030. ISSN 0018-9197 http://resolver.caltech.edu/CaltechAUTHORS:ZHAieeejqe93
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The amplitude-phase coupling factor α (linewidth enhancement factor) is compared for typical semiconductor quantum-well and bulk double heterostructure lasers. As a direct consequence of the reduction of the differential gain, there is no reduction of α in single-quantum-well lasers compared to bulk lasers. The number of quantum wells strongly affects the amplitude-phase coupling in quantum-well lasers. It is shown that the interband transition induced amplitude-phase coupling dominates that induced by the plasma effect of carriers in typical quantum-well lasers. By considering the spontaneous emission factor in the spectral linewidth, the authors show that there is an optimal number of quantum wells for achieving the narrowest spectral linewidth.
|Additional Information:||© Copyright 1993 IEEE. Reprinted with permission. Manuscript received June 5, 1992. This work was supported by DARPA, the Office of Naval Research, and the NSF.|
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|Deposited On:||26 Dec 2006|
|Last Modified:||26 Dec 2012 09:25|
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