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Kvantovaya Elektronika, 2020, Volume 50, Number 4, Pages 315–320 (Mi qe17238)  

Extreme light fields and their interaction with matter

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. Petrovabc, V. A. Petrovac, G. V. Kuptsovac, A. V. Lapteva, A. V. Kirpichnikova, E. V. Pestryakova

a Institute of Laser Physics, Siberian Branch, Russian Academy of Sciences, Novosibirsk
b Novosibirsk State University
c Novosibirsk State Technical University

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.

Keywords: diode pumping, high pulse repetition rate, cryogenic temperatures, laser amplifier, heat equation.

Funding Agency Grant Number
Russian Academy of Sciences - Federal Agency for Scientific Organizations -18-118040290036-4
Russian Foundation for Basic Research 19-42-543007
20-02-00529-
Ministry of Education and Science of the Russian Federation -17-117030310296-7


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English version:
Quantum Electronics, 2020, 50:4, 315–320

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Received: 26.02.2020

Citation: V. V. Petrov, V. A. Petrov, G. V. Kuptsov, A. V. Laptev, A. V. Kirpichnikov, E. V. Pestryakov, “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”, Kvantovaya Elektronika, 50:4 (2020), 315–320 [Quantum Electron., 50:4 (2020), 315–320]

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  • http://mi.mathnet.ru/eng/qe/v50/i4/p315

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