Spectral investigation of Sm^(3+)/Yb^(3+) co-doped sodium tellurite glass

作     者：Fakhra Nawaz Md.Rahim Sahar S.K.Ghoshal Raja J.Amjad M.R.Dousti Asmahani Awang 

作者机构：Advanced Optical Material Research GroupDepartment of PhysicsFaculty of ScienceUniversiti Teknologi Malaysia81310 SkudaiJohorMalaysia Experimental Physics LabsNational Center for PhysicsQuad-i-Azam UniversityIslamabadPakistan 

出 版 物：《Chinese Optics Letters》 (中国光学快报（英文版）)

年 卷 期：2013年第11卷第6期

页      面：62-65页

核心收录：

学科分类：0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0702[理学-物理学] 

基　　金：support fromthe Research Management Centre,University Technology Malaysia (RMC,UTM) through the researchgrants (VOTE ERGS 4L032 and 07J80,MoHE) F.Nawaz extends his gratitude to the financial support by UTM through the International Doctoral Fellowship(UTM.J.10.01/13.14/1/128) 

主　　题：Spectral investigation of Sm co-doped sodium tellurite glass Yb 

摘      要：Sm3＋/yb3＋ co-doped tellurite glasses are prepared by melt-quenching technique. The density of the glasses varies between 4.65 and 4.84 g/cm3. The optical absorption spectra consist of eight bands in the wavelength range of 350-2 000 nm, which correspond to the transitions from ground level 6H5/2 to the various excited states of the Sm3＋ ion. Energy band gaps vary in the range of 2.73 2.91 eV, and the Urbach energy ranges from 0.21 to 0.27. Emission spectra exhibit four peaks originating from the 4G5/2 energy level centered at 576, 613, 657, and 718 nm. Quenches in emission bands may be due to the energy transfer from the Sm3＋ to Yb3＋ ions.