Low quantum defect laser oscillation of a new mixed Yb0.009:Y0.575Gd0.416VO4 crystal

Identifier:  imarina:5121064

Handle: https://hdl.handle.net/20.500.11797/imarina5121064

Authors:  Liu, Junhai; Zhang, Huaijin; Mateos, Xavier; Han, Wenjuan; Petrov, Valentin; Wang, Jiyang

Abstract:
Spectroscopic properties and continuous-wave laser performance of a new Yb-0.009:Y0.575Gd0.416VO4 mixed vanadate crystal are reported. Purely sigma-polarized laser oscillation at 1013-1009.5 nm, with quantum defect lower than 3%, is demonstrated at room temperature in free running mode under diode pumping, producing an output power of 1.55 W with optical-to-optical and slope efficiencies of 19% and 32%, respectively. At longer wavelengths where the pi-polarized oscillation exhibited higher gain, the output power reached 2.5 W, with a slope efficiency of 41%. (C) 2008 Optical Society of America