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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2020, Volume 112, Issue 8, Pages 508–515
DOI: https://doi.org/10.31857/S1234567820200045 (Mi jetpl6277) 		 
This article is cited in 7 scientific papers (total in 7 papers)

OPTICS AND NUCLEAR PHYSICS

Megawatt-level repetitively pulsed erbium 3-$\mu$m laser with strong thermal lens compensation

A. V. Pushkinab, I. A. Slovinskiiba, F. V. Potemkinab

a International Laser Center, Moscow State University, Moscow, 119991 Russia
b Faculty of Physics, Moscow State University, Moscow, 119991 Russia
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DOI: https://doi.org/10.31857/S1234567820200045
Abstract: We report on an increase in the average power of a repetitively pulsed (10 Hz) nanosecond 3-$\mu$m laser due to the compensation of a strong thermal lens in the Cr:Er:YSGG laser cavity maintaining the megawatt-level peak power. Thermally-induced beam distortions are measured in a set of 3-$\mu$m erbium crystals (Er:YAG, Er:YSGG, Cr:Er:YSGG), a scheme for compensating a thermal lens in a Cr:Er:YSGG Q-switched laser with a pulse energy of 23 mJ at a repetition rate of 10 Hz in with low-order transverse mode beam is proposed and experimentally implemented. The developed approach makes it possible to control the cavity mode in high-power nanosecond 3-$\mu$m lasers with flashlamp or diode pumping, which are used for a variety of scientific and technological applications, including pumping laser crystals in the middle infrared range, as well as laser-induced microstructuring and tissue engineering.
Funding agency Grant number
Foundation for the Development of Theoretical Physics and Mathematics BASIS
Russian Science Foundation 17-72-20130
Russian Foundation for Basic Research 18-29-20074
This work was supported by the Russian Science Foundation (project no. 17-72-20130, modeling part) and by the Russian Foundation for Basic Research (project no. 18-29-20074, experimental part). A.V. Pushkin acknowledges the support of the Foundation for the Advancement of Theoretical Physics and Mathematics BASIS.
Received: 19.09.2020
Revised: 21.09.2020
Accepted: 22.09.2020
English version:
Journal of Experimental and Theoretical Physics Letters, 2020, Volume 112, Issue 8, Pages 478–484
DOI: https://doi.org/10.1134/S0021364020200023
Bibliographic databases:
Document Type: Article
Language: Russian
Citation: A. V. Pushkin, I. A. Slovinskii, F. V. Potemkin, “Megawatt-level repetitively pulsed erbium 3-$\mu$m laser with strong thermal lens compensation”, Pis'ma v Zh. Èksper. Teoret. Fiz., 112:8 (2020), 508–515; JETP Letters, 112:8 (2020), 478–484
Citation in format AMSBIB
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\paper Megawatt-level repetitively pulsed erbium 3-$\mu$m laser with strong thermal lens compensation
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\yr 2020
\vol 112
\issue 8
\pages 508--515
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    • This publication is cited in the following 7 articles:
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