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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
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.
Received: 19.09.2020 Revised: 21.09.2020 Accepted: 22.09.2020
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
Linking options:
https://www.mathnet.ru/eng/jetpl6277 https://www.mathnet.ru/eng/jetpl/v112/i8/p508
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Abstract page: | 113 | Full-text PDF : | 12 | References: | 23 | First page: | 9 |
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