Data-based Publications NIRL
P. Manyum, W. Rittisut, P. Mool-am-kha, C. Ekwongsa N. Wantana, Y. Ruangtaweep , M. Popanao, S. Rujirawat, R. Yimnirun, P. Kidkhunthod, A. Prasatkhetragarn, S. Kothan, H.J. Kim and J. Kaewkhao, Structural and luminescence investigations of Gd3+ – Er3+ doped in lithium aluminum borate glasses using XANES and EXAFS techniques, Radiation Physics and Chemistry, 2023, Vol. 206, 110801
– Impact Factor: 3.3
– Ranking: Q2
– DOI:10.1016/j.radphyschem.2023.110801
https://www.sciencedirect.com/science/article/abs/pii/S0969806X23000464?via%3Dihub
🧾Abstract
The typical melt quenching technique was utilized to produce a possibly unique series of Gd3+ and Er3+ dual doped borate glasses with a composition of 25Li2O–5Al2O3-XGd2O3-(69.0-X)B2O3-1.0Er2O3. The amorphous nature and information on chemical bindings of the materials were validated by using fundamental characterization techniques such as X-ray diffraction, Fourier transform infrared, X-ray absorption near-edge structure, and optical screening to identify their features (absorption, excitation, and emission). The refractive index of the glasses improves from 1.5487 to 1.628 as the concentration of Gd2O3 increases. The optical absorption spectra of Er3+ doped glasses were measured from the ultraviolet (UV) through the visible (Vis) and near infrared (NIR) ranges with varying Gd2O3 concentrations in order to determine their optical properties. This luminescence was found to be predominant in photoluminescence spectra, which were obtained at an optimum doping Gd2O3 concentration of 7.5 mol%. The impact of Er3+ doping was assessed through photoluminescence, which exhibited a broad, intense NIR band at 1537 nm ascribed to the 4I13/2 → 4I15/2 transition of Er3+ ions at λEx = 486, 526, 651, and 978 nm excitation, which exhibits outstanding increased intensity with the Er3+ concentration until it reaches 1.0 mol %. A look at visible and near-infrared optical, it is observed that LAGd7.5BEr1.0 glass is a more potential candidate for photonic devices.
P. Manyum, W. Rittisut, P. Mool-am-kha, N. Wantana, Y. Ruangtaweep, S. Rujirawat, R. Yimnirun, P. Kidkhunthod, A. Prasatkhetragarn, S. Kothan, H.J. Kim, P.H. Minh and J. Kaewkhao, Effect of Gd3+/Nd3+– dual doped borate glasses on the physical and spectroscopic properties for the NIR emission at 1.069 µm, Optik, 2023, Vol. 290, 171246
– Impact Factor: 3.1
– Ranking: Q2
– DOI:10.1016/j.ijleo.2023.171246
https://www.sciencedirect.com/science/article/abs/pii/S003040262300743X?via%3Dihub
🧾Abstract
Near-infrared luminescence properties of dual doped Gd3+/Nd3+-incorporated glasses were manufactured using the melt-quenching technique and characterized by several techniques. The modification in glass structure may be seen in the differences in density, molar volume, and refractive index that occur when the amount of lanthanide oxide in the glass increases. The spectroscopic properties of Nd3+ in these glasses are quite well understood, and the observed optical characteristics may be used to process and eventually determine laser properties. According to the results of XANES, the Nd oxidation state remains the predominant peak for Nd3+ in all of the samples. The transition from 4I9/2 to 4G5/2 +2G7/2 is important for the strongest band in the absorption spectra, which can be seen at 584 nm. The luminescence spectra show peaks caused by 4F3/2→4IJ (J=11/2, 13/2) at three excitation wavelengths of 526, 574 and 805 nm. After the processing, we created glass samples for the study of photoluminescence with various amounts of Nd2O3 incorporated into the best host, 25Li2O-5Al2O3-2.5Gd2O3-(67.5-X)B2O3-XNd2O3. Based on luminescence intensity, it is determined that 1.0 mol% of Nd2O3 is the concentration quenching in the studied glasses. The 4F3/2 →4I11/2 transition at 1069 nm, excited by 526, 578 and 803 nm, has the highest emission intensity. The combined findings of the glasses demonstrate that near-infrared luminescence may be successfully used with them. All of the analysis shows that the dual doped Gd3+/Nd3+ borate glass would be a potential solid-state laser candidate.