We have investigated the thermally induced depolarization degree in long-rod cubic crystals of classes 23 and m3 as a function of the heated region and the probe beam radii as well as on crystal orientation. We extended the photoelastic anisotropy parameter and introduced a second anisotropy parameter. Three new specific crystal orientations were defined. General theorems on specific orientations were proved. The best and the worst orientations were determined. They are close or equal to the specific ones in most cases.
© 2011 Optical Society of America
Lasers and Laser Optics
Original Manuscript: September 29, 2010
Revised Manuscript: December 29, 2010
Manuscript Accepted: January 10, 2011
Published: March 22, 2011
Anton G. Vyatkin and Efim A. Khazanov, "Thermally induced depolarization in sesquioxide class m3 single crystals," J. Opt. Soc. Am. B 28, 805-811 (2011)