Open AccessEfficient operation of a diode-pumped Yb:NaY(WO_4)_2 laser
Author(s) -
Guoqiang Xie,
Ding Tang,
H. J. Zhang,
J. Y. Wang,
Liejia Qian
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.16.001686
Subject(s) - materials science , slope efficiency , laser , optics , diode , crystal (programming language) , laser diode , optoelectronics , ytterbium , fiber laser , physics , computer science , programming language
An efficient diode-pumped Yb:NaY(WO(4))(2) (Yb:NYW) disordered crystal laser has been experimentally demonstrated for the fist time. The Yb:NYW crystal has a peak absorption cross section of 1.09 x 10(-20) cm(2) at 972 nm and emission cross section of 1.24 x 10(-20) cm(2) at 1010 nm. Under an absorbed pump power of 11.7 W, the Yb:NYW laser generated an average output power as high as 4.1 W, with a slope efficiency of 45%. It was found that the laser always operated in a self-pulsing mode, and the laser spectrum showed random jumps with time. The mechanism of self-pulsing in the laser was also investigated.