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Author Casperson, Lee W.
Sponsorship USDOE
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Publisher American Institute of Physics (AIP)
Language English
Subject Keyword Engineering-Facilities & Equipment-Lasers ♦ Engineering-Lasers ♦ SEMICONDUCTOR LASERS- OSCILLATION MODES ♦ EMISSION SPECTRA ♦ LINE BROADENING ♦ LINE WIDTHS ♦ THRESHOLD ENERGY
Abstract The oscillation characteristics of a multimode laser are considered in detail, and for the first time saturation by all of the cavity modes is included. Analytical expressions are obtained for the mode amplitudes, linewidths, and over- all spectral characteristics of lasers operating above and below threshold. It is found that with increasing excitation the spontaneous emission spectrum is gradually resolved into a set of narrow discrete modes. Slightly above threshold the number of modes reduces in a homogeneoulsy broadened laser until only a single mode is oscillating strongly. The theoretical results are in agreement with experimental data that have been reported using semiconductor lasers. With inhomogeneous broadening the spectral width goes through a minimum near threshold. (AIP)
ISSN 00218979
Educational Use Research
Learning Resource Type Article
Publisher Date 1975-01-01
Publisher Department School of Engineering and Applied Science, University of California, Los Angeles, California 90024
Publisher Place United States
Journal Journal of Applied Physics
Volume Number 46
Issue Number 12
Organization School of Engineering and Applied Science, University of California, Los Angeles, California 90024


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