Journal of Physical Studies 4(3), 274–281 (2000) DOI: https://doi.org/10.30970/jps.04.274 SIMULATION OF VIBRATIONAL RELAXATION IN THE EXCIMER LASERS V. V. Datsyuk1, I. A. Izmailov2 1Kyiv Taras Shevchenko University, Department of Physics, Kyiv, 03022, Ukraine, 2Institute of Semiconductor Physics, National Academy of Sciences of Ukraine, Department of Theoretical Physics, Kyiv, 03028, Ukraine

The ways to model vibrational relaxation in the rare gas halide excimer lasers are analyzed. The phenomenological approach applied commonly to understand the molecular kinetics is compared with more strict level-to-level and Fokker-Planck models. The validity conditions of the models as well as definitions of the kinetic parameters are discussed. The quantum yield of stimulated emission, the time delay between the pumping and emission pulses, the gain recovery after fast depletion of the upper laser level are examined. Principle contradictions between the models are stressed using diagrams.

PACS number(s): 31.50.+w, 31.70.Hq, 33.70.Fd, 42.55.Gp, 82.40.Tc

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