Browsing by Author "Loiko, P."

Now showing items 1-9 of 9

    • Anisotropy of thermo-optical coefficients of alexandrite laser crystal 

      Loiko, P.; Ghanbari, S.; Matrosov, V.; Yumashev, K.; Major, A. (БНТУ, 2018)
      Anisotropy of thermo-optical coefficients of alexandrite laser crystal / P. Loiko [и др.] // Приборостроение-2018 : материалы 11-й Международной научно-технической конференции, 14-16 ноября 2018 года, Минск, Республика Беларусь / редкол.: О. К. Гусев (председатель) [и др.]. – Минск : БНТУ, 2018. – С. 404-406.
      2019-05-02

    • Continuous-wave microchip laser operation of YB-doped gallium garnets 

      Serres, J. M.; Jambunathan, V.; Loiko, P.; Mateos, X.; Yu, H.; Zhang, H.; Liu, J.; Lucianetti, A.; Mocek, T.; Yumashev, K.; Griebner, U.; Petrov, V.; Aguilo, M.; Diaz, F. (БНТУ, 2018)
      Continuous-wave microchip laser operation of YB-doped gallium garnets / J. M. Serres [и др.] // Приборостроение-2018 : материалы 11-й Международной научно-технической конференции, 14-16 ноября 2018 года, Минск, Республика Беларусь / редкол.: О. К. Гусев (председатель) [и др.]. – Минск : БНТУ, 2018. – С. 412-414.
      2019-05-03

    • Graphene Q-Switched Compact Yb: YAG Laser 

      Serres, J. M.; Jambunathan, V.; Mateos, X.; Loiko, P.; Lucianetti, A.; Mocek, T.; Yumashev, K.; Petrov, V.; Griebner, U.; Aguilo, M.; Diaz, F. (2015)
      We describe a compact Yb: YAG laser Q-switched by a graphene-based saturable absorber and pumped by a laser diode at 932 or 969 nm. The compact laser generates a maximum average output power value of 185 mW at 1032 nm with a slope efficiency value of 12%. The shortest duration of the Q-switched pulse achieved is 228 ns at a repetition frequency of 285 kHz. The maximum pulse energy ...
      2018-03-06

    • 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

    • Novel NIR-to-NIR up-conversion phosphor for enhancing solar cell efficiency 

      Vilejshikova, E.; Khomenko, E.; Loiko, P.; Dymshits, O. (БНТУ, 2016)
      Novel NIR-to-NIR up-conversion phosphor for enhancing solar cell efficiency / E. Vilejshikova [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. 312-315.
      2017-02-03

    • Thermal Lensing and Multiwatt Microchip Laser Operation of Yb:YCOB Crystals 

      Loiko, P.; Serres, J. M.; Mateos, X.; Yu, H.; Zhang, H.; Liu, J.; Yumashev, K.; Griebner, U.; Petrov, V.; Aguilo, M.; Diaz, F. (2016)
      Thermal lensing is studied in monoclinic Yb:Ca4YO(BO3)(3) (Yb:YCOB) oxoborate crystals cut along the optical indicatrix axes. For all orientations, the thermal lens is positive. In the Z-cut crystal, the sensitivity factors of the thermal lens are MZ-X = 2.4 and MZ-Y = 2.8 m(-1)/W (for E parallel to X), and the astigmatism degree is as low as S/M = 14%. The positive thermal lens ...
      2018-03-18

    • Thermal lensing properties of Alexandrite laser crystal 

      Loiko, P.; Ghanbari, S.; Matrosov, V.; Yumashev, K.; Major, A. (БНТУ, 2019)
      Thermal lensing properties of Alexandrite laser crystal / P. Loiko [и др.] // Приборостроение-2019 : материалы 12-й Международной научно-технической конференции, 13–15 ноября 2019 года, Минск, Республика Беларусь / редкол.: О. К. Гусев (председатель) [и др.]. – Минск : БНТУ, 2019. – С. 441-443.
      2020-01-03

    • Thermo-optic characterization of Yb:CaGdAlO4 laser crystal 

      Loiko, P.; Druon, F.; Georges, P.; Viana, B.; Yasukevich, A. (2014)
      Principal thermo-optic coefficients (TOCs), dno/dT and dne/dT, are measured for Yb:CaGdAlO4 crystal, for the first time, to our knowledge. At the wavelength of ~1 μm, they equal –7.6 and –8.6 (Ч10-6 K-1), accordingly. Thermal coefficients of the optical path (TCOP) are determined for this crystal for the principal crystal cuts (a-cut and c-cut) and light polarizations (π or σ). ...
      2017-11-18

    • Tm:KLu(WO4)2 microchip laser Q-switched by a graphene-based saturable absorber 

      Serres, J. M.; Loiko, P.; Mateos, X.; Yumashev, K.; Griebner, K. U.; Petrov, V.; Aguilo, M.; Diaz, F. (2015)
      We report on the first Tm-doped double tungstate microchip laser Q-switched with graphene using a Tm:KLu(WO4)2 crystal cut along the Ng dielectric axis. This laser generates a maximum average output power of 310 mW with a slope efficiency of 13%. At a repetition rate of 190 kHz the shortest pulses with 285 ns duration and 1.6 μJ energy are achieved.
      2017-11-18