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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 14, Iss. 4 — Apr. 1, 1975
  • pp: 950–961

Envelope Gain Saturation in Distributed-Feedback Lasers

K. O. Hill and A. Watanabe  »View Author Affiliations


Applied Optics, Vol. 14, Issue 4, pp. 950-961 (1975)
http://dx.doi.org/10.1364/AO.14.000950


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Abstract

Gain saturation is treated by formulating a model that accounts for the dependence of gain on irradiance level in distributed-feedback lasers. Solutions of the coupled-mode equations of the model are obtained numerically and are presented for both overcoupled and undercoupled laser structures (KL in the 10−13–10 range). Parasitic losses that are distributed uniformly within the structure are found to influence the output power characteristics of distributed-feedback lasers. Also the optimum coupling strength that results in the most efficient conversion of pump power to useful laser output is determined. The optimum coupling strength for any distributed-feedback laser is dependent on the magnitude of the parasitic losses and on the required output-power level.

© 1975 Optical Society of America

History
Original Manuscript: August 6, 1974
Published: April 1, 1975

Citation
K. O. Hill and A. Watanabe, "Envelope Gain Saturation in Distributed-Feedback Lasers," Appl. Opt. 14, 950-961 (1975)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-14-4-950

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