Characteristics of amplification of ultrashort laser pulses in excimer media

Fumihiko Kannari; Minoru Obara

doi:10.1117/12.25993

1 February 1991 Characteristics of amplification of ultrashort laser pulses in excimer media

Fumihiko Kannari, Minoru Obara

Proceedings Volume 1397, 8th Intl Symp on Gas Flow and Chemical Lasers; (1991) https://doi.org/10.1117/12.25993
Event: Eighth International Symposium on Gas-Flow and Chemical Lasers, 1990, Madrid, Spain

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 freqency. 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.

Citation Download Citation

Fumihiko Kannari and Minoru Obara "Characteristics of amplification of ultrashort laser pulses in excimer media", Proc. SPIE 1397, 8th Intl Symp on Gas Flow and Chemical Lasers, (1 February 1991); https://doi.org/10.1117/12.25993

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