Passive Q-switching of diode pumped Nd: KGd(WO4)(2) lasers by V3+: Y3Al5O12 crystal with anisotropy of nonlinear absorption

Vasili G. Savitski, Igor A. Denisov, Alexander M. Malyarevich, Konstantin V. Yumashev, Alexander V. Sandulenko

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6 Citations (Scopus)

Abstract

Use of a V3+:y(3)Al(5)O(12) crystal as a saturable absorber Q-switch for 1.07 and 1.35 mu m Nd:KGd(WO4)(2) diode pumped lasers shows a considerable dependence of output characteristics on the orientation of the intracavity field polarization vector regarding V3+:y(3)Al(5)O(12) crystallographic axes. Anisotropy of nonlinear absorption of V3+ ions in a Y3Al5O12 single crystal at wavelengths of 1.08 and 1.35 mu m has been experimentally studied. The experimental data are analyzed within the framework of a phenomenological model when the V3+ ions are described as three sets of linear dipoles oriented along the crystallographic axes. Ground-state and excited-state absorption cross sections at 1.08 and 1.35 mu m are evaluated to be sigma(gsa) = 3.4 x 10(-18) cm(2), sigma(esa) = 3.0 x 10(-19) cm(2) and sigma(gsa) = 5.4 x 10(-18) cm(2), sigma esa = 4.8 x 10(-19) cm(2), respectively. Saturation fluence and intensity at 1.08 and 1.35 mu m are estimated as 55 mJ/cm(2) and 1.1 MW/cm(2), respectively. (C) 2007 Optical Society of America.

Original languageEnglish
Pages (from-to)5732-5737
Number of pages6
JournalApplied Optics
Volume46
Issue number23
DOIs
Publication statusPublished - 10 Aug 2007

Keywords

  • Yttrium aluminum garnet
  • YAG saturable absorber
  • V-YAG

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    Savitski, V. G., Denisov, I. A., Malyarevich, A. M., Yumashev, K. V., & Sandulenko, A. V. (2007). Passive Q-switching of diode pumped Nd: KGd(WO4)(2) lasers by V3+: Y3Al5O12 crystal with anisotropy of nonlinear absorption. Applied Optics, 46(23), 5732-5737. https://doi.org/10.1364/AO.46.005732