Optical properties of lithium magnesium borate glasses doped with Dy3+ and Sm3+ ions
2012; Elsevier BV; Volume: 407; Issue: 13 Linguagem: Inglês
10.1016/j.physb.2012.03.033
ISSN1873-2135
AutoresY.S.M. Alajerami, S. Hashim, Wan Muhamad Saridan Wan Hassan, Ahmad Termizi Ramli, Azman Kasim,
Tópico(s)Solid State Laser Technologies
ResumoSeveral studies showed the interesting properties of trivalent lanthanide ions when doped in various types of glasses. Optical and physical properties of lithium magnesium borate glasses doped with Dy3+ then with Sm3+ ions were determined by measuring their absorption and luminescence spectra in the visible region. The absorption spectra of Dy3+ showed eight absorption bands with hypersensitive transition at 1265 nm (6H15/2→6F11/2-6H9/2) and three PL emission bands at 588 nm (4F9/2→6H15/2), 660 nm (4F9/2→6H13/2) and 775 nm (4F9/2→6H11/2). Regarding the Sm3+, nine absorption bands were observed with hypersensitive transition at 1237 nm (6H5/2–6F7/2); the PL spectrum showed four prominent peaks at 4G5/2→6H5/2 (yellow color), 4G5/2→6H7/2 (bright orange color), 4G5/2→6H9/2 (orange reddish color) and 4G5/2→6H11/2 (red color), respectively. Finally, a series of physical parameters such as the oscillator strengths, refractive index, ions concentration, Polaron radius and other parameters were calculated for each dopant.
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