Passively Q-switched ceramic Nd3+:YAG/Cr4+:YAG lasers.
Passively Q-switched ceramic Nd3+:YAG lasers with ceramic Cr4+:YAG saturable absorbers are demonstrated. When the lasers are pumped by a 1-W cw laser diode, optical-optical efficiency as great as 22% is obtained with Cr4+:YAG of initial transmission ranging from 94% to 79%. The results are similar to those in their crystalline counterparts. The operation of Brewster's angle and the polarization state of the laser output are also investigated.
Feng
Yan
Y
Institute for Laser Science, University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585, Japan. feng@ils.uec.ac.jp
Lu
Jianren
J
Takaichi
Kazunori
K
Ueda
Ken-ichi
K
Yagi
Hideki
H
Yanagitani
Takagimi
T
Kaminskii
Alexander A
AA