Photoluminescence analysis of Er3+-ions Doped P2O5-Gd2O3/GdF3-BaO-ZnO glass systems

We develop two Er3+-ions-doped Phosphate glass systems, 69 P2O5-10Gd(2)O(3)-10BaO-10ZnO-1Er(2)O(3) and 69 P2O5-10GdF(3)-10BaO-10ZnO-1Er(2)O(3), labeled as ZBaFEr and ZBaOEr, respectively, by the melt-quenching technique and study systematically their physical, optical, and luminescence properties such as densities, refractive indexes, ultraviolet-visible near-infrared (UV-Vis-NIR) absorption, photoluminescence spectra in Vis-NIR region, CIE coordinates and lifetime. The absorption spectra revealed the Er3+ peaks at 378, 405, 451, 489, 522, 652, 803, 978, and 1537 nm, attributed to the transition from I-4(15/2) level to (4)G(11/2), (2)G(9/2), F-4(5/)2, F-4(7/)2,H-4(1)1/2, F-4(9/2), I-4(9/2), I-4(11/2) and I-4(13/2) levels, respectively. We find that at 380-nm excitation, the emission peak at 1543 nm in the near-infra-red (NIR) region has a higher intensity for ZBaFEr than for the ZBaOEr. Furthermore, we employ the Judd-Ofelt (JO) and McCumber theory to study the stimulated emission cross-section for I-4(13/2) -> I-4(15/2) transitions of Er3+ ion. We find the bandwidth-quality [FWHM x sigma(emi)(lambda)] to be 249 and 274 for ZBaOEr and ZBaFEr, respectively. The NIR-emission for both glasses covers the S-, C- and L-band of low-less-communication-window. The present results suggest that these glasses can be potentially used in optical amplifiers and tunable lasers. (C) 2022 Published by Elsevier B.V.

Automated summary

Two Er3+-doped phosphate glass systems were developed and their physical, optical, and luminescent properties were systematically studied. The results indicate that these glass systems have potential applications in optical amplifiers and tunable lasers.