Applied Physics B

, Volume 30, Issue 3, pp 109–116 | Cite as

Dye stability under excimer-laser pumping

I. Method and modelling for infrared dyes
  • V. S. Antonov
  • K. L. Hohla
Contributed Papers


The stability of polymethine dyes under XeCl laser excitation has been investigated. (For these dyes emitting in the ir the difference between absorbed and emitted photoenergy is 2 eV.) The stability was measured in an amplifier device operating in the saturated regime. While the influence on dye concentration is negligible, the fluence dependence shows the importance of two photon absorptions. A meausure for the stability is the number of photons which can be emitted per dye molecule before the dye solution has degraded to 50% of the initial value. This value is in the range of 150–280. The stability is clearly related to the formation of photoproducts absorbing at the pump and the laser wavelength. A model starting from the change in the dye solution absorption spectra is in very good agreement with the observed energy decays.


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Copyright information

© Springer-Verlag 1983

Authors and Affiliations

  • V. S. Antonov
    • 1
  • K. L. Hohla
    • 1
  1. 1.Lambda PhysikGöttingenGermany

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