Numerical simulation of amplification of frequency-modulated radiation in a gas amplifier THL-100 laser system

Numerical simulation methods have been used to study the effect of frequency modulation of input laser radiation with a pulse duration of 250 ps on the gain characteristics in a gas XeF (C - A) amplifier of the hybrid THL-100 laser system at a pump energy of 270 - 400 J. Using the Wigner distributio...

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Bibliographic Details
Published in:Quantum electronics (Woodbury, N.Y.) N.Y.), 2019-03, Vol.49 (3), p.205-209
Main Authors: Yastremskii, A.G., Ivanov, N.G., Losev, V.F.
Format: Article
Language:English
Subjects:
Amplification
amplification of chirped picosecond pulses
AMPLIFIERS
BEAMS
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
Computer simulation
COMPUTERIZED SIMULATION
DISTRIBUTION FUNCTIONS
FREQUENCY MODULATION
Hybrid systems
Laser beams
LASER RADIATION
laser radiation energy
LASERS
Numerical methods
numerical simulation
Pulse duration
PULSES
PUMPING
Radiation spectra
SPECTRA
THL-100 hybrid laser system
WIGNER DISTRIBUTION
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Summary:Numerical simulation methods have been used to study the effect of frequency modulation of input laser radiation with a pulse duration of 250 ps on the gain characteristics in a gas XeF (C - A) amplifier of the hybrid THL-100 laser system at a pump energy of 270 - 400 J. Using the Wigner distribution function, local radiation spectra are calculated at various points of the input laser beam with positive and negative chirps. The effect of the pump energy of the amplifier on the energy, intensity, and duration of the output laser radiation pulses is investigated. It is shown that with an insignificant change in energy, the pulse duration of the output radiation turns out to be longer with a negative chirp of the input radiation.
ISSN:1063-7818
1468-4799
DOI:10.1070/QEL16782