Spectral and lasing investigations of Yb:YSGG crystal.
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.
State Key Laboratory of Crystal Materials and Institute of Crystal Materials, Shandong University, Jinan 250100, China.
Shuxian
S
Wang
Kui
K
Wu
Yicheng
Y
Wang
Haohai
H
Yu
Huaijin
H
Zhang
Xueping
X
Tian
Qibiao
Q
Dai
Junhai
J
Liu
D003460:Crystallization; D007834:Lasers; D008027:Light; D008422:Materials Testing; D012542:Scattering, Radiation; D015018:Ytterbium / Q000737:chemistry* / Q000528:radiation effects*
D015018:Ytterbium