Characteristics of amplification of ultrashort laser pulses in excimer media

F. Kannari, M. Obara

    Research output: Contribution to journalConference articlepeer-review


    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
    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 Sept 101990 Sept 14

    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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