Abstract
In this work, we deal with glass composition, ${{29{\rm P}}_2}{{\rm O}_5} + ({60 - x}){{\rm ZnO + 10Na}_2}{{\rm O + xTeO}_2}$ ($x = {5 - 40}\;{\rm mol}.\%$) doped with 1 mol.% of ${{\rm Nd}_2}{{\rm O}_3}$. The samples are characterized by x ray diffraction, micro-Raman, optical absorption, and photoluminescence techniques. Refractive index ($n$) linearly increased with ${{\rm TeO}_2}$ content, as well as the optical basicity $(\Lambda)$ due to the strengthening of the covalent bond between cation and oxide ions. Such information was corroborated by Raman spectra via an increase of non-bridging oxygens. The maximum phonon energy is approximately $1010\;{{\rm cm}^{- 1}}$, which is lower than reported for ${{\rm P}_2}{{\rm O}_5} - {{\rm ZnO - Na}_2}{\rm O}$ phosphate glass ($1164\;{{\rm cm}^{- 1}}$). Detailed spectroscopic and luminescent properties based on ${{\rm TeO}_2}$ content are discussed. From luminescence spectra, laser parameters were estimated, viz., radiative transition probabilities, radiative lifetimes, branching ratios, and emission cross sections. The results show that the optimal laser emission parameters are obtained for ${{\rm TeO}_2}$ content equal to 20 mol.%, which evinces this glass composition as a promising host material for 1.06 µm high-power laser applications.
© 2023 Optica Publishing Group
Full Article | PDF ArticleMore Like This
Yu Zhang, Lizhang Xia, Jiale Ding, Chengyan Li, Xinjie Shen, Jun Li, and Yaxun Zhou
J. Opt. Soc. Am. B 38(4) 1125-1134 (2021)
M. J. V. Bell, V. Anjos, L. M. Moreira, R. F. Falci, L. R. P. Kassab, D. S. da Silva, J. L. Doualan, P. Camy, and R. Moncorgé
J. Opt. Soc. Am. B 31(7) 1590-1594 (2014)
P. Babu, Hyo Jin Seo, Kyoung Hyuk Jang, R. Balakrishnaiah, C. K. Jayasankar, Ki-Soo Lim, and V. Lavín
J. Opt. Soc. Am. B 24(9) 2218-2228 (2007)