Nn. Ilichev et al., MODEL OF PASSIVE-Q-SWITCHING TAKING ACCOUNT OF THE ANISOTROPY OF NONLINEAR ABSORPTION IN A CRYSTAL SWITCH WITH PHOTOTROPIC CENTERS, Quantum electronics, 28(2), 1998, pp. 147-151
A model is proposed of passive Q switching in a laser by a crystal swi
tch with phototropic centres, Expressions for the output energy and du
ration of a giant pulse are derived taking account of the geometric fa
ctor representing the distribution of the orientations of these centre
s relative to the crystal lattice of the passive switch, The calculate
d results are in agreement with those obtained in an experimental inve
stigation of passive Q switching in a neodymium laser with a switch in
the form of a doped LiF:F-2(-) or Cr4+:YAG crystal.