V. V. Petrov, G. V. Kuptsov, A. I. Nozdrina, V. A. Petrov, A. V. Laptev, A. V. Kirpichnikov, E. V. Pestryakov, “Contactless method for studying temperature within the active element of a multidisk cryogenic amplifier”, Kvantovaya Elektronika, 2019, Volume 49, Number 4,Pages <nobr>358

This article is cited in 18 papers

Special issue 'Extreme light fields and their interaction with matter'

Contactless method for studying temperature within the active element of a multidisk cryogenic amplifier

V. V. Petrov^abc, G. V. Kuptsov^abc, A. I. Nozdrina^ac, V. A. Petrov^ac, A. V. Laptev^a, A. V. Kirpichnikov^a, E. V. Pestryakov^ab

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

Abstract: A new original method has been developed and experimentally implemented, allowing temperature fields to be contactlessly measured in the pump region of active elements in highpower-diode-pumped laser amplifiers, including those operating at cryogenic temperatures. The presence of a temperature gradient of ~57 K mm^-1 along the pump beam axis at the centre of the active element of the laser amplification unit operating at cryogenic temperatures with a pulse repetition rate up to 1 kHz is simulated and experimentally confirmed.

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

Received: 19.02.2019