The temporal behavior of depolarization losses during the pumping and cooling phases in a flash lamp pumped Nd glass heat capacity disk laser is reported. We also investigated the influence of thermally induced birefringence on the laser performance by measuring the output energy and the deformation it produced in the probe beam. The complete two-dimensional thermal profile of the laser disk surface was measured for the determination of the thermal uniformity across the disk surface. A new concept for pumping the laser disk is proposed that can lead to a considerable reduction in the depolarization loss in the Brewster angle configuration and hence provide a high average power solid state laser with good beam quality.
© 2010 Optical Society of America
Lasers and Laser Optics
Original Manuscript: June 5, 2009
Revised Manuscript: September 16, 2009
Manuscript Accepted: November 12, 2009
Published: December 21, 2009
Anup Lal Shah, Saumendra Nath Datta, Anil Raj Singh, Rajni Malhotra, and Lalit Kumar, "Thermally induced birefringence in Nd glass heat capacity disk laser," Appl. Opt. 49, 1-5 (2010)