Browsing Публикации в изданиях других стран by Author "Yumashev, K."

Now showing items 1-4 of 4

    • 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

    • 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

    • 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