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Optica Publishing Group
  • Quantum Electronics and Laser Science Conference
  • OSA Technical Digest (Optica Publishing Group, 1989),
  • paper TUFF4

Coherent pulse amplification in KrF laser amplifiers

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Abstract

A theoretical model has been developed to study the propagation and amplification of hyper-short (<200-fs) pulses in excimer laser amplifiers, taking into account coherent propagation effects. Although intense coherent sources of UV radiation are of considerable current interest for a wide variety of experimental applications, 1 little attention has so far been directed to the theory of these systems. The most interesting aspect of the problem is related to the repulsive nature of the terminal state of the amplifier. Projection of the upper vibrational state onto the lower state in the spirit of the Franck-Condon principle provides a rough measure of the bandwidth of levels involved and suggests that in the case of KrF the dephasing lime will be around 20 fs.

© 1989 Optical Society of America

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