Browsing by Author "Savitski, V. G."

Now showing items 1-6 of 6

    • Anisotropy of the photo-elastic effect in Nd : KGd(WO4) 2 laser crystals 

      Loiko, P. A.; Savitski, V. G.; Kemp, A.; Pavlyuk, A. A.; Kuleshov, N. V.; Yumashev, K. V. (Wiley, 2014)
      The anisotropy of thermal lensing and the photo-elastic effect is characterized for diodepumped Nd : KGd(WO4)2 crystals cut along the Np and Ng optical indicatrix axes and along its optical axis, O = Ng + 43°, at a laser wavelength of 1067 nm. Distortions in the spatial profile of the output laser beam are analyzed. The thermal lens is astigmatic; the orientation of its principal ...
      2016-02-08

    • Micro-joule cavity-dumped wavelength-tunable semiconductor disk laser 

      Savitski, V. G.; Calvez, S.; Dawson, M. D. (БНТУ, 2010)
      We report on cavity-dumping of a semiconductor disk laser as a method to generate energetic wavelength-tunable nanosecond pulses with repetition rates ranging from 0.1 to 4MHz. Experimentally, emission of 24ns pulses with peak output power of 41W in a single beam output (and of 30ns with peak power of 57W in a combined beam output) with wavelength tuning from 1045–1080nm was ...
      2012-03-23

    • Pulsed KGd(WO4)2 Raman laser: towards emission linewidth narrowing 

      Savitski, V. G. (БНТУ, 2015)
      The linewidth of a KGd(WO4)2 pulsed Raman laser is analysed experimentally for different configurations of the Raman and pump resonators: with narrow and broadband pump emission profiles, with and without linewidth narrowing elements in the Raman laser resonator, with and without injection seeding into the Raman cavity. The benefits of a narrow linewidth pump source in combination ...
      2015-07-24

    • Simplified method of calorimetric measurements of background loss in crystals 

      Savitski, V. G.; Kemp, A. (БНТУ, 2012)
      We report on the measurements of absorption coefficient of the synthetic diamond crystal using an adapted form of laser calorimetry technique at wavelengths of 1064, 640, 532, 452 and 364 nm. The absorption coefficient was found to increase exponentially from 0,03 cm-1 at 1064 nm to 0,7 cm-1 at 364 nm.
      2013-02-14

    • Thermal lens study in diode pumped Ng- and Np-cut Nd:KGd(WO4)2 laser crystals 

      Loiko, P. A.; Yumashev, K. V.; Kuleshov, N. V.; Savitski, V. G.; Calvez, S.; Burns, D.; Pavlyuk, A. A. (Optical Society of America, 2009)
      A comparative study of thermal lensing effect in diode laser pumped Ng- and Np-cut Nd:KGd(WO4)2 (KGW) laser crystals was performed for laser emission polarized along the principle refractive axis, Nm. The thermal lens in the Ng-cut Nd: KGW was found to be weakly astigmatic with a positive refractive power for both the Nm- and Np-directions. For Np -cut Nd:KGW, strong astigmatism ...
      2012-01-24

    • Thermal lensing measurements in the anisotropic laser crystals under diode pumping 

      Loiko, P. A.; Savitski, V. G.; Yumashev, K. V.; Kuleshov, N. V.; Pavlyuk, A. A. (БНТУ, 2012)
      An experimental setup was developed for thermal lensing measurements in the anisotropic di-ode-pumped laser crystals. The studied crystal is placed into the stable two-mirror laser cavity operating at the fundamental transversal mode. The output beam radius is measured with re-spect to the pump intensity for different meridional planes (all these planes contain the light propagation ...Nm.
      2013-02-05