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Conversion of broadband thermal radiation in lithium niobate crystals of various compositions |
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| Authors: | A V Syuy M N Litvinova P S Goncharova N V Sidorov M N Palatnikov V V Krishtop V V Likhtin |
| Institution: | 1217. Far Eastern State Transport University, ul. Serysheva 47, Khabarovsk, 680021, Russia 2217. I.V. Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials, Kola Science Center, Russian Academy of Sciences, ul. Fersmana 14, Apatity, Murmansk oblast, 184200, Russia 3217. Komsomol’sk-on-Amur State Technical University, pr. Lenina 27, Komsomol’sk-on-Amur, 681013, Russia |
| Abstract: | The conversion of the broadband thermal radiation in stoichiometric (R = 1) lithium niobate single crystals that are grown from melt with 58.6 mol % of LiO2, congruent (R = Li/Nb = 0.946) melt with the K2O flux admixture (4.5 and 6.0 wt %), and congruent melt and in congruent single crystals doped with the Zn2+, Gd3+, and Er3+ cations is studied. It is demonstrated that the conversion efficiency of the stoichiometric crystal that is grown from the melt with 58.6 mol % of LiO2 is less than the conversion efficiency of congruent crystal. In addition, the stoichiometric and almost stoichiometric crystals and the doped congruent crystals exhibit the blue shift of the peak conversion intensity in comparison with a nominally pure congruent crystal. For the congruent crystals, the conversion intensities peak at 520 and 495 nm, respectively. |
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