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Article
Optical Gain Measurements Based on Fundamental Properties and Comparison with Many-Body Theory
Journal of Applied Physics
  • T. Keating, University of Illinois at Urbana-Champaign
  • S. H. Park, University of Illinois at Urbana-Champaign
  • J. Minch, University of Illinois at Urbana-Champaign
  • Xiaomin Jin, University of Illinois at Urbana-Champaign
  • Shun-Lien Chuang, Urbana
  • T. Tanbun-Ek, Lucent Technologies
Publication Date
9-28-1999
Abstract

We present high accuracy measurements of gain, loss, and transparency energy in long-wavelength semiconductors based on a hybrid approach using the fundamental relationship between the gain and the spontaneous emission spectra. Independent measurements of optical gain, transparency energy, and loss show the accuracy and validity of this technique. These results are compared with those obtained by the non-Markovian gain model with many-body effects under the spontaneous emission transformation method. It is found that the hybrid approach for the gain spectrum alleviates many of the problems related to the poor signal to noise ratio in the amplified-spontaneous emission near and below the band edge. The theoretical spectra compare well with the measured spectra for both the transverse electric and transverse magnetic polarizations.

Publisher statement
This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article may be found at http://link.aip.org/link/?JAPIAU/86/2945/1.
Citation Information
T. Keating, S. H. Park, J. Minch, Xiaomin Jin, et al.. "Optical Gain Measurements Based on Fundamental Properties and Comparison with Many-Body Theory" Journal of Applied Physics Vol. 86 Iss. 6 (1999) p. 2945 - 2952
Available at: http://works.bepress.com/xjin/8/