The thermal-birefringence effect in Nd<sup>3+</sup> -doped YAG ceramics has been investigated. The amount of depolarization induced by thermal birefringence in Nd:YAG ceramics is nearly the same as that in (111)-cut single crystals at the same Nd<sup>3+</sup> concentration. However, depolarization becomes larger as the Nd<sup>3+</sup> concentration increases, even at the same absorbed pump power.
© 2002 Optical Society of America
(140.3380) Lasers and laser optics : Laser materials
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(140.3530) Lasers and laser optics : Lasers, neodymium
(140.3580) Lasers and laser optics : Lasers, solid-state
Ichiro Shoji, Yoichi Sato, Sunao Kurimura, Voicu Lupei, Takunori Taira, Akio Ikesue, and Kunio Yoshida, "Thermal-birefringence-induced depolarization in Nd:YAG ceramics," Opt. Lett. 27, 234-236 (2002)