Spectral investigation of Sm3+/Yb3+co-doped sodium tellurite glass

• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2013,（6）
• 页码范围: 62-65
• 页数: 4页
• 语种: 英文
• DOI: 10.3788/COL201311.061605

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 4Gs/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.