Open AccessSpectral and lasing investigations of Yb:YSGG crystal
Author(s) -
Shuxian Wang,
Kui Wu,
Yicheng Wang,
Haohai Yu,
Huaijin Zhang,
Xuemin Tian,
Qibiao Dai,
Junhai Liu
Publication year - 2013
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.21.016305
Subject(s) - lasing threshold , optics , materials science , laser , slope efficiency , wavelength , optoelectronics , crystal (programming language) , absorption (acoustics) , ultrashort pulse , fiber laser , physics , computer science , programming language
We report on a systematic study of the absorption and emission spectral properties of (Yb(0.1)Y(0.9))(3)(Sc(1.5)Ga(0.5))Ga(3)O(12) (Yb:YSGG) crystals. The broad fluorescence spectral lines indicate great potential of Yb:YSGG for tunable and ultrafast laser applications. Efficient continuous-wave (cw) laser oscillation was also demonstrated at room temperature (RT), generating an output power of 6.11 W with an optical-to-optical efficiency of 64.2%, and a slope efficiency of 80.1% with respect to absorbed pump power. The laser emission spectrum shifts to shorter wavelengths as the transmission of the output coupler varies from 3% to 20%, a result that can be explained based on the effective gain cross-sections of Yb:YSGG.