Fe:ZnSe and Fe:ZnMgSe lasers pumped by Er:YSGG radiation

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

doi:10.1117/12.2077466

20 February 2015 Fe:ZnSe and Fe:ZnMgSe lasers pumped by Er:YSGG radiation

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

Author Affiliations +

Proceedings Volume 9342, Solid State Lasers XXIV: Technology and Devices; 93421V (2015) https://doi.org/10.1117/12.2077466
Event: SPIE LASE, 2015, San Francisco, California, United States

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.

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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, and V. K. Komar "Fe:ZnSe and Fe:ZnMgSe lasers pumped by Er:YSGG radiation", Proc. SPIE 9342, Solid State Lasers XXIV: Technology and Devices, 93421V (20 February 2015); https://doi.org/10.1117/12.2077466

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