Open AccessLow quantum defect laser oscillation of a new mixed Yb_0009:Y_0575Gd_0416VO_4 crystal
Author(s) -
Junhai Liu,
Huaijin Zhang,
Xavier Mateos,
Wenjuan Han,
Valentín Petrov,
Jing Wang
Publication year - 2008
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.16.017729
Subject(s) - slope efficiency , oscillation (cell signaling) , optics , laser , materials science , wavelength , crystal (programming language) , vanadate , diode , quantum efficiency , optoelectronics , physics , fiber laser , chemistry , biochemistry , computer science , metallurgy , programming language
Spectroscopic properties and continuous-wave laser performance of a new Yb(0.009):Y(0.575)Gd(0.416)VO(4) 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%.