Luminescence and Thermal Properties of Er:GSGG and Yb,Er:GSGG Laser Crystals
SUN Dun-Lu1**,LUO Jian-Qiao1,XIAO Jing-Zhong2, 3,ZHANG Qing-Li1,CHEN Jia-Kang1,LIU Wen-Peng1,KANG Hong-Xiang4,YIN Shao-Tang1
1Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031 2Department of Physics, Universidade de Coimbra, Rua Larga, P-3004-516 Coimbra, Portugal 3International Centre for Materials Physics, Chinese Academy of Sciences, Shenyang 110016 4Institute of Radiation Medicine, Academy of Military Medical Sciences, Beijing 100850
Luminescence and Thermal Properties of Er:GSGG and Yb,Er:GSGG Laser Crystals
SUN Dun-Lu1**,LUO Jian-Qiao1,XIAO Jing-Zhong2, 3,ZHANG Qing-Li1,CHEN Jia-Kang1,LIU Wen-Peng1,KANG Hong-Xiang4,YIN Shao-Tang1
1Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031 2Department of Physics, Universidade de Coimbra, Rua Larga, P-3004-516 Coimbra, Portugal 3International Centre for Materials Physics, Chinese Academy of Sciences, Shenyang 110016 4Institute of Radiation Medicine, Academy of Military Medical Sciences, Beijing 100850
摘要Er3+−doped and Yb3+/Er3+ co−doped Gd3Sc2Ga3O12 (abbreviated as Er:GSGG and Yb,Er:GSGG, respectively) laser crystals are investigated by using a combination of spectroscopic measurements and thermal characterizations. An absorption peak of Yb,Er:GSGG crystal shifts to 970 nm and its absorption band broadens obviously, which makes the crystal suitable for pumping by a 970 nm laser diode (LD). This crystal also exhibits a shorter lifetime of a lower laser level, a larger emission cross section and higher thermal conductivity than those of Er:GSGG. All these factors suggest that Yb3+/Er3+ co−doping has a positive effect on improving the spectroscopic and thermal performances in GSGG based laser crystals, and imply that double-doped Yb,Er:GSGG crystal is a potential candidate as an excellent LD pumped 2.79 µm laser material.
Abstract：Er3+−doped and Yb3+/Er3+ co−doped Gd3Sc2Ga3O12 (abbreviated as Er:GSGG and Yb,Er:GSGG, respectively) laser crystals are investigated by using a combination of spectroscopic measurements and thermal characterizations. An absorption peak of Yb,Er:GSGG crystal shifts to 970 nm and its absorption band broadens obviously, which makes the crystal suitable for pumping by a 970 nm laser diode (LD). This crystal also exhibits a shorter lifetime of a lower laser level, a larger emission cross section and higher thermal conductivity than those of Er:GSGG. All these factors suggest that Yb3+/Er3+ co−doping has a positive effect on improving the spectroscopic and thermal performances in GSGG based laser crystals, and imply that double-doped Yb,Er:GSGG crystal is a potential candidate as an excellent LD pumped 2.79 µm laser material.
2012, Vol. 29 
