THERMALLY INDUCED BIREFRINGENCE IN YAG RODS IN THE (001) DIRECTION
[001]取向YAG激光棒的热致双折射效应

The principal axes of thermally induced birefringence in YAG laser rods generally do not possess axial symmetry because the strain-optic tensor of YAG crystals is different from that of isotropic materials A calculation is given for the (001) direction, the results of which are supported by experiments in which it was found that for CW or high repetition rate pulsed operation the transmission loss of (001) rods is lower than that of (111) rods. The polarized output of YAG lasers in which a polarizer was placed in the cavity was maximum where the transmission loss was minimum.