Laser and Spectroscopy Laboratory, Department of Physics, Banaras Hindu University, Varanasi 221005, India.
Spectrochim Acta A Mol Biomol Spectrosc. 2010 Sep 15;77(1):101-6. doi: 10.1016/j.saa.2010.04.033. Epub 2010 May 5.
In this paper, we report the physical and spectroscopic properties of Er(3+), Sm(3+) and Er(3+):Sm(3+) ions codoped barium fluorotellurite (BFT) glasses. Different Stokes and anti-Stokes emissions were observed under 532 nm and 976 nm laser excitations. Energy transfer from Er(3+) ion to Sm(3+) ion was confirmed on the basis of luminescence intensity variation and decay curve analysis in both the cases. Under green (532 nm) excitation emission intensity of Sm(3+) ion bands improves whereas on NIR (976 nm) excitation new emission bands of Sm(3+) ions were observed in Er:Sm codoped samples. Ion interactions and the different energy transfer parameters were also calculated.
本文报告了掺铒、掺钐和铒-钐共掺氟化钡碲酸盐玻璃的物理和光谱性质。在 532nm 和 976nm 激光激发下观察到不同的斯托克斯和反斯托克斯发射。基于两种情况下的发光强度变化和衰减曲线分析，证实了从铒离子到钐离子的能量转移。在绿光（532nm）激发下，钐离子的发射强度增强，而在近红外（976nm）激发下，在掺铒-钐样品中观察到钐离子的新发射带。还计算了离子相互作用和不同的能量转移参数。
