title: High-efficiency direct-pumped Nd:YVO4 laser operating at 1.34 microm.
abstract: We report a high-efficiency Nd:YVO(4) laser operating at 1342 nm pumped by an all-solid-state Q-switched Ti:Sapphire laser at 879 nm. A plano-concave cavity was optimized to obtain high efficiency and good beam quality. Output power for two Nd:YVO(4) crystals with 1.0- and 3.0- at.% Nd(3+) doping under 879-nm pumping was measured respectively. Comparative results obtained by traditional pumping at 808 nm into the highly absorbing (4)F(5/2) level were presented, showing that the slope efficiency of the 1.0-at.% Nd:YVO(4) laser under 879-nm pumping was 10.5% higher than that of 808-nm pumping. In a 4-mm-thick, 1.0-at.% Nd:YVO(4)4 crystal, a high slope efficiency of 64% was achieved under 879-nm pumping, with an optical-to-optical conversion efficiency of 41.3%.
authors.affiliation: College of Precision Instrument and Opto-electronics Engineering, Institute of Laser and Opto-electronics, Tianjin University, Tianjin, China. dingxin@tju.edu.cn
authors.forename: X
authors.initials: X
authors.lastname: Ding
authors.forename: H
authors.initials: H
authors.lastname: Zhang
authors.forename: R
authors.initials: R
authors.lastname: Wang
authors.forename: W Q
authors.initials: WQ
authors.lastname: Wen
authors.forename: P
authors.initials: P
authors.lastname: Wang
authors.forename: J Q
authors.initials: JQ
authors.lastname: Yao
authors.forename: X Y
authors.initials: XY
authors.lastname: Yu
mesh_terms: D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D053844:Lasers, Solid-State; D008027:Light; D008962:Models, Theoretical; D012542:Scattering, Radiation