title: Passively Q-switched Nd:Sc0.2Y0.8SiO5 dual-wavelength laser with the orthogonally polarized output.
abstract: We have demonstrated a laser-diode pumped continuous-wave (CW) and passively Q-switched laser with a Nd:Sc(0.2)Y(0.8)SiO(5) (Nd:SYSO) crystal for the first time. In the CW operation, the laser was found to oscillate in tri-wavelength regime at 1074.8 nm, 1076.6 nm and 1078.2 nm, respectively. The maximum CW output power of 1.96 W was obtained, giving an optical-to-optical conversion efficiency of 35% and a slope efficiency of 39%. Using either Cr(4+):YAG or V(3+):YAG crystal as saturable absorber, stable passively Q-switched laser was obtained at dual-wavelength of 1074.8 nm and 1078.2 nm with orthogonal-polarization. The maximum average output power, pulse repetition rate, and shortest pulse width were 1.03 W, 50 kHz, and 24 ns, respectively. The passively Q-switched dual-wavelength laser could be potentially used as a source for generation of terahertz radiation.
authors.affiliation: State Key Laboratory of Crystal Materials, Shandong University, Ji’nan 250100, China.
authors.forename: S D
authors.initials: SD
authors.lastname: Liu
authors.forename: L H
authors.initials: LH
authors.lastname: Zheng
authors.forename: J L
authors.initials: JL
authors.lastname: He
authors.forename: J
authors.initials: J
authors.lastname: Xu
authors.forename: X D
authors.initials: XD
authors.lastname: Xu
authors.forename: L B
authors.initials: LB
authors.lastname: Su
authors.forename: K J
authors.initials: KJ
authors.lastname: Yang
authors.forename: B T
authors.initials: BT
authors.lastname: Zhang
authors.forename: R H
authors.initials: RH
authors.lastname: Wang
authors.forename: X M
authors.initials: XM
authors.lastname: Liu
mesh_terms: D017076:Computer-Aided Design; D004735:Energy Transfer; D004867:Equipment Design; D019544:Equipment Failure Analysis; D053844:Lasers, Solid-State; D012031:Refractometry / Q000295:instrumentation*