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Optics and Spectroscopy, 2018, Volume 124, Issue 6, Pages 790–794
DOI: https://doi.org/10.21883/OS.2018.06.46082.180-17 (Mi os982) 		 
This article is cited in 5 scientific papers (total in 5 papers)

Nonlinear and quantum optics

Two-photon absorption of nonchain HF laser radiation in germanium single crystals

E. E. Alekseeva, S. Yu. Kazantsevb, I. G. Kononovb, V. E. Rogalincd, K. N. Firsovbe

a National Research Center Kurchatov Institute, Moscow, 123182, Russia
b Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow, 119991, Russia
c National Center of Laser Systems and Complexes Astrophizika, Moscow, 12542, Russia
d Tver State University, Tver, 170100, Russia
e National Research Nuclear University Moscow Engineering Physics Institute, Moscow, 115409, Russia
Full-text PDF Citations (5)
DOI: https://doi.org/10.21883/OS.2018.06.46082.180-17
Abstract: Some results of experimental and numerical studies on the transmission of a nonchain high-frequency (HF) laser beam through germanium (Ge) single crystals of differing thickness and specific resistance are presented. Based on the experimental data for the HF(DF) lasing spectrum, the coefficient of two-photon absorption in germanium has been estimated as K$_2$ = 55 $\pm$ 10 cm/GW at $\lambda$ = 2.8 $\mu$m. The results are in good agreement with theory. The developed experimental data-processing software has enabled the numerical study of the transmission of a high-power beam with $\lambda$ = 2.6–3 $\mu$m through Ge at any laser-pulse-impact moment. It has been shown that thin germanium coatings can efficiently smoothen the distribution of energy over the beam aperture for high-power laser radiation with $\lambda$ = 2.6–4 $\mu$m.
Funding agency Grant number
Ministry of Science and Higher Education of the Russian Federation АААА-А18-118021690024-6
Russian Foundation for Basic Research 18-08-00793
Received: 15.08.2017
Revised: 05.02.2018
English version:
Optics and Spectroscopy, 2018, Volume 124, Issue 6, Pages 821–825
DOI: https://doi.org/10.1134/S0030400X18060036
Bibliographic databases:
Document Type: Article
Language: Russian
Citation: E. E. Alekseev, S. Yu. Kazantsev, I. G. Kononov, V. E. Rogalin, K. N. Firsov, “Two-photon absorption of nonchain HF laser radiation in germanium single crystals”, Optics and Spectroscopy, 124:6 (2018), 790–794; Optics and Spectroscopy, 124:6 (2018), 821–825
Citation in format AMSBIB
\Bibitem{AleKazKon18}
\by E.~E.~Alekseev, S.~Yu.~Kazantsev, I.~G.~Kononov, V.~E.~Rogalin, K.~N.~Firsov
\paper Two-photon absorption of nonchain HF laser radiation in germanium single crystals
\jour Optics and Spectroscopy
\yr 2018
\vol 124
\issue 6
\pages 790--794
\mathnet{http://mi.mathnet.ru/os982}
\crossref{https://doi.org/10.21883/OS.2018.06.46082.180-17}
\elib{https://elibrary.ru/item.asp?id=34982886}
\transl
\jour Optics and Spectroscopy
\yr 2018
\vol 124
\issue 6
\pages 821--825
\crossref{https://doi.org/10.1134/S0030400X18060036}
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    • This publication is cited in the following 5 articles:
    Citing articles in Google Scholar: Russian citations, English citations
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