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Controlled fundamental supermode operation of phase-locked arrays of gain-guided diode lasers

Kapon, E. and Katz, J. and Margalit, S. and Yariv, A. (1984) Controlled fundamental supermode operation of phase-locked arrays of gain-guided diode lasers. Applied Physics Letters, 45 (6). pp. 600-602. ISSN 0003-6951. doi:10.1063/1.95323.

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Uniform semiconductor laser arrays tend to oscillate in a superposition of their supermodes, thus leading to large beam divergence and spectral spread. Discrimination among the supermodes in phase-locked arrays is discussed theoretically. It is shown that supermode discrimination in gain-guided arrays, in favor of the fundamental supermode, is made possible by the near-field interference patterns which result from the complex optical fields of the gain-guided lasers. A fundamental supermode operation is demonstrated, for the first time, in GaAlAs/GaAs gain-guided laser arrays. This is achieved by control of the current (gain) profile across the array by means of individual laser contacts.

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Additional Information:Copyright © 1984 American Institute of Physics. Received 30 March 1984; accepted 29 May 1984. The research described in this paper was performed jointly by the Applied Physics Department, California Institute of Technology, under contracts with the Office of Naval Research and the National Science Foundation, and the Jet Propulsion Laboratory under contract with the National Aeronautics and Space Administration. E. Kapon would like to acknowledge the support of the Weizmann Postdoctoral Fellowship.
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Office of Naval ResearchUNSPECIFIED
National Science FoundationUNSPECIFIED
Weizmann InstituteUNSPECIFIED
Subject Keywords:optical modes, semiconductor lasers, mode control, operation, gain
Issue or Number:6
Record Number:CaltechAUTHORS:KAPapl84d
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:12231
Deposited By: Archive Administrator
Deposited On:29 Oct 2008 23:47
Last Modified:08 Nov 2021 22:26

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