G. V. Kuptsov, V. A. Petrov, V. V. Petrov, A. V. Laptev, A. O. Konovalova, A. V. Kirpichnikov, E. V. Pestryakov, “Laser amplification in an Yb : YAG active mirror with a significant temperature gradient”, Kvantovaya Elektronika, 2021, Volume 51, Number 8,Pages <nobr>679

This article is cited in 7 papers

Lasers

Laser amplification in an Yb : YAG active mirror with a significant temperature gradient

G. V. Kuptsov^ab, V. A. Petrov^ab, V. V. Petrov^acb, A. V. Laptev^a, A. O. Konovalova^ac, A. V. Kirpichnikov^a, E. V. Pestryakov^a

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

Abstract: A time-dependent model of laser amplification in an Yb : YAG crystal is considered based on a system of balance equations, as well as radiation transfer and heat conduction equations. The model also takes into account the dependence of the laser characteristics of the gain medium on the injection wavelength and the effect of amplified spontaneous emission. This model is verified based on a diode-pumped amplifier with cryogenic cooling of active elements. The dependences of the gain on the pump pulse energy are experimentally measured for different amplification regimes and compared with simulation results.

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

Received: 18.06.2021