Email this article Nonlinear absorption of non-chain HF laser radiation in germanium
- Authors: Alekseev E.E.1, Firsov K.N.2,3, Kazantsev S.Y.3, Kononov I.G.3, Rogalin V.E.4,5
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Affiliations:
- National Research Center “Kurchatov Institute”
- Prokhorov General Physics Institute
- National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
- “Astrophysika National Laser Centre” OJSC
- Tver State University
- Issue: Vol 25, No 4 (2017)
- Pages: 280-288
- Section: Generation and Transformation of Optical Radiation in Semiconductors
- URL: https://journals.rcsi.science/1541-308X/article/view/217890
- DOI: https://doi.org/10.3103/S1541308X17040070
- ID: 217890
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Abstract
The transmission of high-power HF(DF) laser radiation through Ge single crystals of different quality has been experimentally and numerically investigated. Based on the experimental data for the lasing spectrum, the two-photon absorption coefficient in Ge is estimated to be K2 =55±10 cmGW−1 at λ=2.8μm. The transmission dynamics of high-power radiation with λ=2.6−3 μm through germanium crystals is numerically simulated.
About the authors
E. E. Alekseev
National Research Center “Kurchatov Institute”
Author for correspondence.
Email: a.e.e.1407@gmail.com
Russian Federation, pl. Akademika Kurchatova 1, Moscow, 123182
K. N. Firsov
Prokhorov General Physics Institute; National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Email: a.e.e.1407@gmail.com
Russian Federation, ul. Vavilova 38, Moscow, 119991; Kashirskoe sh. 31, Moscow, 115409
S. Yu. Kazantsev
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Email: a.e.e.1407@gmail.com
Russian Federation, Kashirskoe sh. 31, Moscow, 115409
I. G. Kononov
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Email: a.e.e.1407@gmail.com
Russian Federation, Kashirskoe sh. 31, Moscow, 115409
V. E. Rogalin
“Astrophysika National Laser Centre” OJSC; Tver State University
Email: a.e.e.1407@gmail.com
Russian Federation, Volokolamskoe sh. 95, Moscow, 125424; ul. Zhelyabova 33, Tver, 170002
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