Structural and Upconversion Fluorescence Properties of Er3+/Yb3+-Codoped Lead-Free Germanium-Bismuth Glass
SUN Hong-Tao1,2, ZHANG Li-Yan1, DUAN Zhong-Chao1,2, YU Chun-Lei1,2, ZHANG Jun-Jie1, Dai Shi-Xun1, HU Li-Li1, JIANG Zhong-Hong1
1Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800
1Graduate School of the Chinese Academy of Sciences, Beijing 100039
Structural and Upconversion Fluorescence Properties of Er3+/Yb3+-Codoped Lead-Free Germanium-Bismuth Glass
SUN Hong-Tao1,2;ZHANG Li-Yan1;DUAN Zhong-Chao1,2;YU Chun-Lei1,2;ZHANG Jun-Jie1;Dai Shi-Xun1;HU Li-Li1;JIANG Zhong-Hong1
1Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800
1Graduate School of the Chinese Academy of Sciences, Beijing 100039
Abstract： We study the structural and infrared-to-visible upconversion fluorescence properties of Er3+/Yb3+-codoped lead-free germanium-bismuth glass. The structure of lead-free germanium-bismuth-lanthanum glass is investigated by peak-deconvolution of Raman spectroscopy. Intense green and red emissions centred at 525, 546, and 657nm, corresponding to the transitions 2H11/2→4I15/2, 4S3/2→4I15/2, and 4F9/2→4I15/2, respectively, are observed at room temperature. The quadratic dependence of the 525, 546, and 657nm emissions on excitation power indicates that a two-photon absorption process occurs under 975nm excitation.
2005, Vol. 22 
