Characteristics of amplification of ultrashort laser pulses in excimer media

F. Kannari, M. Obara

Research output: Contribution to journalConference article

Abstract

Energy extraction in XeCl amplifier is theoretically studied for 0.16- and 3-ps initial laser pulse durations. Since an amplification gain is defined by the degree of matching between a gain spectrum and a propagating laser pulse spectrum, when a laser pulse is amplified by a gain medium with a multilined and inhomogeneously broadened spectrum, the saturation behavior of the amplified energy depends on characteristics of change in the laser spectrum during the amplification. Therefore, a saturation energy cannot be simply defined as a unique value for certain initial laser pulsewidth, and depends on amplification history of the pulse, amplified laser energy level, and initial carrier frequency. When a laser pulse is amplified to extremely high energy level (> 5 mJ/cm2), the laser pulse spectrum, which is filtered by the gain spectrum in small-signal amplification regime, is nonlinearly distorted and tends to shift its peak to the red spectrum side.

Original languageEnglish
Pages (from-to)85-89
Number of pages5
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume1397
Issue numberpt 1
Publication statusPublished - 1991 Jan 1
Event8th International Symposium on Gas Flow and Chemical Lasers Part 1 (of 2) - Madrid, Spain
Duration: 1990 Sep 101990 Sep 14

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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