Cooperative Quantum Cutting in Er^(3+)/Yb^(3+)Codoped Oxyfluoride Glass Ceramics  

作　　者：LUO Shi-Qiang ZHAO Li-Juan HU Nan ZHANG Ming ZHANG Pan WANG Ya-Zhou YU Hua 罗师强;赵丽娟;胡男;张铭;张盼;王亚洲;余华(Key Laboratory for Weak Light Nonlinear Photonics(Ministry of Education),Nankai University,Tianjin 300457;College of Physics,Nankai University,Tianjin 300071)

机构地区：[1]Key Laboratory for Weak Light Nonlinear Photonics(Ministry of Education),Nankai University,Tianjin 300457 [2]College of Physics,Nankai University,Tianjin 300071

出　　处：《Chinese Physics Letters》2011年第3期97-99,共3页中国物理快报（英文版）

基　　金：Supported by the Key Natural Scientific Foundation of Tianjin under Grant No 9JCZDJC16700;the Fundamental Research Funds for the Central Universities under Grant No 65010831.

摘　　要：Oxvfluoride glass ceramic doped with doped with Er^(3+)/Yb^(3+)was synthesized.Rare earth ions are doped into fluoride nanocrystals according to x-ray diffractive patterns.The enhanced red emission of Er^(3+)/Yb^(3+)in the fluoride nanocrystals,excited by xenon lamp ta 449nm,is investigated and analyzed by cooperative quantum cutting mode.the cross relaxation appears from^(4)F_(5/2)→^(4)F_(9/2)to^(4)I_(15/2)→^(4)I_(13/2)because of the nearer distance of rare earth ions and the larger absorption section of^(4)F_(5/2)→^(4)I_(13/2)in the quantum cutting.It results in two emissions of^(4)F_(9/2)→^(4)I_(15/2)and^(4)I_(13/2)→^(4)I_(15/2).This implies that a 449nm photon could dissolve into two emiswith wavelength 665nm and 1530nm.This could be an effective way to obtain 1530nm emission for optical communication.

关 键 词：CERAMIC FLUORIDE earth 

分 类 号：TQ1[化学工程]