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A comparison of amplitude-phase coupling and linewidth enhancement in semiconductor quantum-well and bulk lasers

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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Abstract

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.


Item Type:Article
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.
Record Number:CaltechAUTHORS:ZHAieeejqe93
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:ZHAieeejqe93
Alternative URL:http://dx.doi.org/10.1109/3.214485
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:6841
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:26 Dec 2006
Last Modified:26 Dec 2012 09:25

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