Zeitschrift für Physik B Condensed Matter

, Volume 50, Issue 1, pp 79–86

Saturation of the gain in laser amplifiers by feedback of amplified spontaneous emission (ASE)

  • M. Munz
  • G. Haag

DOI: 10.1007/BF01307230

Cite this article as:
Munz, M. & Haag, G. Z. Physik B - Condensed Matter (1983) 50: 79. doi:10.1007/BF01307230


The influence of amplified spontaneous emission (ASE) on the operation of laser amplifiers is studied with a photon-transport equation approach. Nonsaturable losses are included in our considerations. Two different amplifier geometries are considered, the single-pass- and the double-pass configuration. In both cases closed equations for the stage gain and the ASE-output are derived. The feedback of ASE leads to a new saturation behavior of the gain in dependence of the pump intensity.

Copyright information

© Springer-Verlag 1983

Authors and Affiliations

  • M. Munz
    • 1
  • G. Haag
    • 1
  1. 1.Institut für Theoretische Physik der UniversitätStuttgartGermany

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