Kokh, A. E.

Kokh, D. A.

Kononova, N. G.

Kuznetsov, Artem B.

Shevchenko, V. S.

Simonova, E. A.

Svetlichnyi, Valerii A.

English

Tomsk State University Repository

PULSED LASERS AND LASER APPLICATIONSTHE 15th  INTERNATIONAL CONFERENCEThe 15th International Conference AMPL-2021 PULSED LASERS AND LASER APPLICATIONS September 12–17, 2021 Tomsk, Russia ABSTRACTS GENERAL SPONSOR Special Systems. Photonics, St. Petersburg, Russia CONFERENCE ORGANIZERS Institute of Atmospheric Optics SB RAS Institute of High Current Electronics SB RAS Tomsk State University Tomsk Polytechnic University CONFERENCE SPONSORS Ministry of Education and Science of Russian Federation, Russia Russian Academy of Sciences, Russia Siberian Branch of Russian Academy of Science, Russia Laser Association, Russia  CONFERENCE SPONSORS TOPAZ Research and Inculcation Enterprise, Tomsk, Russia Young Scientists Counsil IAO SB RAS, Tomsk, Russia SP Equipment, Novosibirsk, Russia Azimut Photonics, Moscow, Russia LOTIS TII, Minsk, Belarus Special Systems. Photonics, St.-Petersburg, Russia CLZ Ltd, Moscow, Russia Leningrad Laser Systems, St.-Petersburg, Russia MEDIA SPONSORS Atmospheric and Oceanic Optics Journal, Tomsk, Russia Photonics Journal, Moscow, Russia  Tomsk, 2021  105  CONVERSION OF LASER RADIATION, OPTOELECTRONIC DEVICES AND NONLINEAR OPTICS SESSION F    F-7 SYNTHESIS AND GROWTH OF THE BORATE CRYSTALS  FOR NONLINEAR APPLICATIONS A.E. Kokh1, N.G. Kononova1, A.B. Kuznetsov1, E.A. Simonova1, V.S. Shevchenko1, D.A. Kokh1, and V.A. Svetlichnyi2 1Institute of Geology and Mineralogy SB RAS, 3 Koptyug Ave., 630090, Novosibirsk, Russia, a.e.kokh@gmail.com; 2Tomsk State University, 36 Lenin Ave., 634050, Tomsk, Russia, v_svetlichnyi@bk.ru The report presents the results of growing two well known borate crystals for nonlinear optics. The first is the crystal of lithium threeborate LiB3O5 (LBO), which is used to convert submicron laser radiation into the second and third harmonics. LBO is characterized by high damage threshold, therefore it is increasingly used in high power wide aperture laser systems due to significant progress in the production of large crystals. The second is the crystal of the low temperature phase of barium metaborate -BaB2O4 (BBO), which is used to convert laser radiation in the near ultraviolet region. Both crystals are grown by methods of melt-solution crystallization. The originality of our approach consists in the creation of statically and dynamically inhomogeneous heat fields during the growth of these crystals. The report also considers the conditions for obtaining noncentrosymmetric three-cation scandium borates with the general formula LnxLnyScz (BO3)4 (x + y + z = 4) with various combinations of lanthanides Ln. The absence of a symmetry center and the presence of rare-earth cations in the structure make these compounds promising for the purpose of self-doubling of laser radiation. The work is carried out according to the basic Project of the IGM SB RAS No. 0330-2019-0008, the study of three-cation  scandium borates is supported by the RFBR Grant No. 19-05-00198a. F-8 GENERATION OF THz EMISSION IN FEMTOSECOND LASER INDUCED FILAMENT D.M. Lubenko, S.V. Alekseev, E.A. Sandabkin, and V.F. Losev Institute of High Current Electronics SB RAS, 2/3 Akademichesky Ave., 634055, Tomsk, Russia, lubenkodm@gmail.com The results of experimental studies of the conditions for generating THz emission in laser filament created by focused ultrashort laser pulse of Ti: Sapphire complex are presented. The influence of the magnitude and direction of applied external electric field, energy, polarization of pump radiation in one and two color optical schemes on the intensity, divergence, and polarization of THz radiation was investigated. THz spectra was estimated and optimal generation conditions are discussed. The reported study was supported by Russian Foundation for Basic Research Project No. 19-48-703027. F-9 ANGULAR DISTRIBUTION OF THz RADIATION GENERATED  IN PLASMA OF SINGLE COLOR FILAMENT G.E. Rizaev1, A.V. Koribut1, D.V. Mokrousova1, Ya.V. Grudtsyn1, D.V. Pushkarev1, S.A. Savinov1, Yu.A. Mityagin1, L.V. Seleznev1, A.A. Ionin1, D.E. Shipilo1,2, N.A. Panov1,2, I.A. Nikolaeva1,2, and O.G. Kosareva1,2 1Physical Institute of RAS, 53 Leninsky Ave., 119991, Moscow, Russia, georgeriz@yandex.ru; 2Moscow State University, GSP-1, Leninsky Gory, 119991, Moscow, Russia Plasma formed during filamentation of ultrashort laser pulses is one of the sources of terahertz (THz) radiation. 

Synthesis and growth of the borate crystals for nonlinear applications

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Synthesis and growth of the borate crystals for nonlinear applications

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