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Proceedings Paper

Fe:ZnSe and Fe:ZnMgSe lasers pumped by Er:YSGG radiation
Author(s): H. Jelínková; M. E. Doroshenko; M. Jelínek; J. Šulc; M. Němec; V. Kubeček; Y. A. Zagoruiko; N. O. Kovalenko; A. S. Gerasimenko; V. M. Puzikov; V. K. Komar
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Paper Abstract

The aim of the presented work was to design and characterize bulk Fe:ZnSe and Fe:Zn(1-x)Mg(x)Se (Mg content x = 0.19) lasers coherently pumped by electro-optically Q-switched Er:YSGG laser. This laser generated pumping radiation at 2.79 μm with the maximum energy of 50 mJ in 80 ns long pulse with the repetition-rate of 1 Hz. The 25 mm long optical resonator of Fe:ZnSe or Fe:ZnMgSe lasers was formed by a plan dichroic pumping mirror and a concave output coupler (r = 200 mm) with reflectivity 88 % @ 4-5 μm. Both lasers were operated at room temperature. Measured maximum output energy/slope efficiency in respect to the absorbed energy was ~ 3.8 mJ/42 % for the Fe:ZnSe laser and ~ 0.48 mJ/10 % for the Fe:ZnMgSe laser. The generated output pulse duration was 150 – 200 ns in both cases and the output beam spatial profile was approximately gaussian. The Fe:ZnSe and Fe:ZnMgSe lasers output spectra line-width was ~ 200 nm (FWHM) and their maxima were centered at 4.45 μm and 4.8 μm, respectively. The results were compared to pumping the same crystals by a Q-switched Er:YAG laser in similar conditions.

Paper Details

Date Published: 20 February 2015
PDF: 6 pages
Proc. SPIE 9342, Solid State Lasers XXIV: Technology and Devices, 93421V (20 February 2015); doi: 10.1117/12.2077466
Show Author Affiliations
H. Jelínková, Czech Technical Univ. in Prague (Czech Republic)
M. E. Doroshenko, A. M. Prokhorov General Physics Institute (Russian Federation)
M. Jelínek, Czech Technical Univ. in Prague (Czech Republic)
J. Šulc, Czech Technical Univ. in Prague (Czech Republic)
M. Němec, Czech Technical Univ. in Prague (Czech Republic)
V. Kubeček, Czech Technical Univ. in Prague (Czech Republic)
Y. A. Zagoruiko, Institute for Single Crystals (Ukraine)
N. O. Kovalenko, Institute for Single Crystals (Ukraine)
A. S. Gerasimenko, Institute for Single Crystals (Ukraine)
V. M. Puzikov, Institute for Single Crystals (Ukraine)
V. K. Komar, Institute for Single Crystals (Ukraine)

Published in SPIE Proceedings Vol. 9342:
Solid State Lasers XXIV: Technology and Devices
W. Andrew Clarkson; Ramesh K. Shori, Editor(s)

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