Applied physics

, Volume 22, Issue 4, pp 355–359 | Cite as

Infrared fluorescence and laser action of fast mode-locking dyes

  • A. Seilmeier
  • B. Kopainsky
  • W. Kaiser
Contributed Papers


Fluorescence spectra in the near infrared are observed of the dye Eastman 9860 and of new, faster mode-locking dyes. The quantum efficiencies are determined to be small with η≃10−3. The short fluorescence lifetimes are deduced from optical gain measurements. The fluorescence time-constants are found to have the same value as the corresponding absorption recovery times. Even laser action is observed in these fast saturable absorbers previously belieyed to be non-fluorescent.


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Copyright information

© Springer-Verlag 1980

Authors and Affiliations

  • A. Seilmeier
    • 1
  • B. Kopainsky
    • 1
  • W. Kaiser
    • 1
  1. 1.Physik Department der Technischen Universität MünchenMünchenFed. Rep. Germany

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