Optical properties of the Tm3+ and energy transfer between Tm3+→Pr3+ ions in P2O5-CaO-SrO-BaO phosphate glass

✍ Scribed by Z. Mazurak; M. Czaja; R. Lisiecki; J. Gabryś-Pisarska

• Publisher: Elsevier Science
• Year: 2011
• Tongue: English
• Weight: 470 KB
• Volume: 33
• Category: Article
• ISSN: 0925-3467
• DOI: 10.1016/j.optmat.2010.10.031

✦ Synopsis

A P 2 O 5 -CaO-SrO-BaO phosphate glass doped with Tm 3+ and glasses doped with (Tm 3+ , Pr 3+ ) were used for this study. The photo-luminescence behaviors of Tm 3+ and Pr 3+ in phosphate glass were investigated by absorption, excitation and emission spectroscopy. The energy transfer between Tm 3+ and Pr 3+ in phosphate glasses (which exhibit a variety of transfer efficiencies) was studied. The experimental quantum efficiencies of the luminescence of Tm 3+ g 0 and (Tm 3+ , Pr 3+ ) doped phosphate glasses were measured to give g/g 0 = 0.447, 0.305, and 0.179 for (0.4 mol% Pr 3+ , 1.0 mol% Tm 3+ ), (0.8%Pr 3+ , 1.0%Tm 3+ ) and (1.6 mol% Pr 3+ , 1.0 mol% Tm 3+ ), respectively. In order to verify the nature of the ion coupling in our phosphate glass system, we applied the Inokuti-Hirayama model. The non-radiative energy transfer rate from Tm 3+ to Pr 3+ , transfer efficiencies, and the donor-acceptor distance have been calculated and compared with obtained experimental data. As usual, the efficiency and the probability of energy transfer increase with the concentration of the acceptor.