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Lasing characteristics of heavily doped single-crystal Fe:ZnSe

  • Antonov, V. A.1
  • Davydov, A. A.2
  • Firsov, K. N.1, 3
  • Gavrishchuk, E. M.4, 5
  • Kononov, I. G.1
  • Kurashkin, S. V.4
  • Podlesnykh, S. V.1
  • Raspopov, N. A.6
  • Zhavoronkov, N. V.2
  • 1 A.M. Prokhorov General Physics Institute of RAS, 38 Vavilov Str., Moscows, 119991, Russia , Moscows (Russia)
  • 2 Research Institute of Material Science and Technology JSC RIMST, RIMST, Georgievskiy prospect, 5, Building 2, Zelenograd, Moscow, 124460, Russia , Zelenograd (Russia)
  • 3 National Research Nuclear University MEPhI, Kashirskoye shosse 31, Moscow, 115409, Russia , Moscow (Russia)
  • 4 G.G. Devyatykh Institute of Chemistry of High-Purity Substances of RAS, 49 Troponina St., Nizhny Novgorod, 603950, Russia , Nizhny Novgorod (Russia)
  • 5 N.I. Lobachevski Nizhny Novgorod State University, 23 Gagarin Avenue, Nizhny Novgorod, 603950, Russia , Nizhny Novgorod (Russia)
  • 6 P N Lebedev Physical Institute of RAS, 53 Leninsky pr., Moscow, 119991, Russia , Moscow (Russia)
Published Article
Applied Physics B
Springer Berlin Heidelberg
Publication Date
Aug 24, 2019
DOI: 10.1007/s00340-019-7288-7
Springer Nature


Characteristics of a Fe:ZnSe laser are studied at room temperature. The laser active elements are heavily doped single crystals with the Fe2+\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\hbox {Fe}^{2+}$$\end{document} ion concentration n=0.64×1019-5.7×1019cm-3\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$n=0.64\times 10^{19}-5.7\times 10^{19}\hbox {cm}^{-3}$$\end{document}, grown from melt by the Bridgman method. The generated energy of 870 mJ is obtained at the total efficiencies with respect to the absorbed and incident energies ηabs=43%\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\eta _{\mathrm{{abs}}}=43\%$$\end{document} and ηinc≈35%\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\eta _{\mathrm{{inc}}}\approx 35\%$$\end{document}, respectively. The laser slope efficiency with respect to the absorbed energy is ηslope≈50%\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\eta _\mathrm{{slope}}\approx 50\%$$\end{document}. In a heavily doped active element with the Fe2+\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\hbox {Fe}^{2+}$$\end{document} concentration n=5.7×1019cm-3\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$n=5.7\times 10^{19}\hbox {cm}^{-3}$$\end{document}, in which the medium excitation depth is just a part of the total element dimension along the optical axis (the element is completely non-transparent for the pumping radiation), the radiation spectrum of the Fe:ZnSe laser shifts to the long-wavelength range by more than 300 nm as compared to spectra of the laser on crystals excited along the whole element length. It is shown that Fe:ZnSe lasers on heavily doped single-crystal elements can be efficiently excited by a radiation of a Cr:ZnSe laser without tuning the spectrum of the latter to the longer wavelength range.

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