Modelling of the laser amplification process with allowance for the effect of the temperature distribution in an Yb: YAG gain element on the thermophysical and lasing characteristics of the medium

V. V. Petrov, V. A. Petrov, G. V. Kuptsov, A. V. Laptev, A. V. Kirpichnikov, E. V. Pestryakov

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

A time-dependent three-dimensional model for the laser amplification process has been constructed with allowance for the effect of the temperature distribution on the thermophysical and lasing characteristics of gain media. We have performed numerical modelling of the laser amplification process in the gain elements of a two-stage subjoule-level cryogenic laser amplifier operating at a pulse repetition rate of up to 1 kHz. It has been shown that taking into account the temperature distribution is of critical importance in calculation of cryogenically cooled laser amplifiers pumped with high-power diodes. We have found optimal diode pump parameters at which the maximum achievable pulse energy at the amplifier output can reach 300 and 570 mJ at pulse repetition rates of 1000 and 500 Hz, respectively.

Original languageEnglish
Pages (from-to)315-320
Number of pages6
JournalQuantum Electronics
Volume50
Issue number4
DOIs
Publication statusPublished - 1 Apr 2020

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