A diode-pumped Q-switched Nd:YAG laser that operates at the eye-safe 1444 nm wavelength has been developed. When pumped by a 10-W fiber-coupled array at 808 nm, it generated 1 W in cw operation and 560 mW at 20-kHz repetition rate with active <i>Q</i>-switching. Design issues such as thermal lensing characterization and beam quality are discussed.
© 1998 Optical Society of America
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(140.3530) Lasers and laser optics : Lasers, neodymium
(140.3540) Lasers and laser optics : Lasers, Q-switched
(140.3580) Lasers and laser optics : Lasers, solid-state
Antonio Agnesi, Stefano Dell’Acqua, Carlo Pennacchio, Giancarlo Reali, and Pier Giorgio Gobbi, "High-Repetition-Rate Q-Switched Diode-Pumped Nd:YAG Laser at 1.444 μm," Appl. Opt. 37, 3984-3986 (1998)