Browsing by Author "Kuleshov, N."

Now showing items 1-9 of 9

    • Crystal growth and spectroscopic characterization of Yb:YMgB5O10 

      Gorbachenya, K.; Yasukevich, A.; Lazarchuk, A.; Kisel, V.; Shishko, T.; Volkova, E.; Maltsev, V.; Koporulina, E.; Yapaskurt, V.; Kuzmin, N.; Ksenofontov, D.; Mitina, D.; Jiliaeva, A.; Kuleshov, N. (БНТУ, 2022)
      A transparent Yb:YMgB5O10 single crystal with dimensions up to 25×23×25 mm was grown. Absorption cross-section spectra were produced. The luminescence spectra of the Yb: YMgB5O10 crystal were measured in the spectral range of 950–1100 nm. The luminescence kinetics of the 2F5/2 energy level were investigated and the lifetime was determined.
      2022-12-28

    • Dual Wavelength Chirped Pulse Regenerative Amplifier Based on Yb3+:LuAlO3 Crystal for Terahertz Applications 

      Rudenkov, A.; Kisel, V.; Yasukevich, A.; Hovhannesyan, K.; Petrosyan, A.; Kuleshov, N. (БНТУ, 2020)
      Compact diode-pumped chirped pulse regenerative amplifier systems with pulse repetition rate of hundreds kilohertz based on Yb3+-doped crystals are of practical importance for wide range of applications such as materials processing, medicine, scientific research, etc. The aim of this work was to study the Yb3+:LuAlO3 crystal based dual wavelength chirped pulse regenerative ...
      2020-03-16

    • Gain narrowing free operation of chirped pulse regenerative amplifier based on YB:LuAlO3 crystal 

      Rudenkov, A.; Kisel, V.; Yasukevich, A.; Hovhannesyan, K.; Petrosyan, A.; Kuleshov, N. (БНТУ, 2016)
      Gain narrowing free operation of chirped pulse regenerative amplifier based on YB:LuAlO3 crystal / A. Rudenkov [et al.] // Приборостроение-2016 : материалы 9-й международной научно-технической конференции, Минск, 23-25 ноября 2016 г. / Белорусский национальный технический университет ; редкол.: О. К. Гусев [и др.]. – Минск, 2016. – С. 240-241.
      2017-03-23

    • High Power SESAM Mode-Locked Laser Based on Yb3+:YAlO3 Bulk Crystal 

      Rudenkov, A.; Kisel, V.; Yasukevich, A.; Hovhannesyan, K.; Petrosyan, A.; Kuleshov, N. (БНТУ, 2020)
      Yttrium aluminium perovskite YAlO3 (YAP) crystal, doped with rare-earth ions, has been extensively studied as a diode-pumped laser host material. The wide interest to rare-earth ions doped YAP crystals is explained by its good thermal and mechanical properties, high natural birefringence, widely used Czochralski growth method. The aim of this work was to study the Yb3+:YAlO3 ...
      2020-09-18

    • Microchip laser operation of Tm,Ho:KLu(WO4)2 crystal 

      Loiko, P.; Serres, J. M.; Mateos, X.; Yumashev, K.; Kuleshov, N.; Petrov, V.; Griebner, U.; Aguilo, M.; Diaz, F. (2014)
      A microchip laser is realized on the basis of a monoclinic Tm,Ho-codoped KLu(WO4)2 crystal cut for light propagation along the Ng optical indicatrix axis. This crystal cut provides positive thermal lens with extremely weak astigmatism, S/M = 4%. High sensitivity factors, M = dD/dPabs, of 24.9 and 24.1 m−1/W for the mg- and pg- tangential planes are calculated with respect to the ...
      2017-11-15

    • Passively Q-switched Er,Yb:GdAl3(BO3)4 laser with SWCNT as a saturable absorber 

      Barashkova, M.; Gorbachenya, K.; Yasukevich, A.; Kisel, V.; Kuleshov, N.; Leonyuk, N.; Choi, S.; Rotermund, F.; Khomenko, S. (БНТУ, 2016)
      Passively Q-switched Er,Yb:GdAl3(BO3)4 laser with SWCNT as a saturable absorber / M. Barashkova [et al.] // Сборник материалов 72-й студенческой научно-технической конференции, 20-28 апреля 2016 г. / Белорусский национальный технический университет, Факультет горного дела и инженерной экологии. Секция Английский язык. - Минск, 2016. – С. 382-386.
      2017-02-03

    • Passively Q-Switched Thulium Microchip Laser 

      Gaponenko, M.; Kuleshov, N.; Südmeyer, T. (2016)
      We present the first passively Q-switched thulium microchip laser. The diode-pumped laser incorporates a Tm:KYW gain medium and an InGaAs semiconductor saturable absorber mirror. The laser emits pulses with a duration of 2.4 ns at a repetition rate of 1.2 MHz with an average output power of 130 mW at a wavelength of 1905 nm. It operates in a fundamental TEM00 mode with M2 < 1.1. ...
      2018-03-06

    • Spectroscopy of Tm:KY(WO4)2 crystal grown by the modified Czochralski method 

      Gusakova, N.; Gorbachenya, K.; Kisel, V.; Yasukevich, A.; Guretskii, S.; Trukhanova, E.; Kravtsov, A.; Karpinsky, V.; Ozen, Y.; Ozcelik, S.; Kuleshov, N. (БНТУ, 2021)
      Tm3+:KY(WO4)2 (KYW) single crystals were grown by the modified Czochralski method. Laser-related spectroscopic properties of Tm3+:KYW crystal: absorption and luminescence spectra as well as kinetics of luminescence decay were studied.
      2022-02-02

    • Thermal expansion of KYbXY1-X(WO4)2 crystals 

      Yumashev, K.; Trusova, E.; Guretskii, S.; Karpinsky, D.; Trukhanova, K.; Kuleshov, N.; Malyarevich, A. (БНТУ, 2022)
      Average and differential linear thermal expansion coefficients of KYbxY1-x(WO4)2 crystals are determined in the directions of the optical indicatrix axes Np, Nm and Ng using dilatometric technique. Dependence of the average and differential linear thermal expansion coefficients on the temperature in the range of 75–290 C and ytterbium contains x from 0 to 1.0 are discussed.
      2022-12-28