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<p>This study focuses on optical properties of Sm<sup>3+</sup> doped two different lithium borate glasses. These optical glasses were prepared exploiting the conservative melt-quenching technique. Thermal stability and annealing temperatures were studied for all the glass samples. X-ray diffraction technique is used to examine the amorphous behaviour of glasses. The Fourier Transform Infrared approach enables the observation of the vibrational band locations exhibited by the host material. The chemical composition of these materials has been ascertained by using Energy-Dispersive X-ray Spectroscopy. Optical absorption and emission measurements were employed in optical research. The evaluation process involves determining various spectroscopic parameters from the absorption spectra, Judd–Ofelt (J–O) parameters (Ω<sub>2</sub>, Ω<sub>4</sub>, Ω<sub>6</sub>), the nephelauxetic parameters (β) along with bonding parameters (δ). The calculation of radiative parameters, such as radiative transition probabilities (A<sub>T</sub>), branching ratios (β<sub>cal</sub>, β<sub>exp</sub>), and stimulated emission cross sections (σ<sub>p</sub>), were performed via J–O theory. The elevated stimulated emission cross sections (σ<sub>p</sub> × 10<sup>–22</sup>(cm<sup>2</sup>)) and optical gains ((σ<sub>p</sub> × τ<sub>rad</sub>) × 10<sup>−25</sup>cm<sup>2</sup>s) suggest that 0.5&#xa0;mol% of Sm<sup>3+</sup> doped lithium carbonate mixed borate glass composition could serve as a promising gain medium for solid-state lasers. The visible luminescence spectra of all the glasses were used to determine CIE coordinates, CCT, and colour purity.</p>

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Study of thermal, structural and lasing properties of Sm3+ doped different lithium borate glasses for photonic device applications

  • 期刊论文

  • 发表日期：

    2025年9月4日

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  • P. Sai Dinesh,
  • B. Suryanarayana Devara,
  • Y. C. Ratnakaram,
  • M. Kumar,
  • M. Seshadri

摘要

This study focuses on optical properties of Sm3+ doped two different lithium borate glasses. These optical glasses were prepared exploiting the conservative melt-quenching technique. Thermal stability and annealing temperatures were studied for all the glass samples. X-ray diffraction technique is used to examine the amorphous behaviour of glasses. The Fourier Transform Infrared approach enables the observation of the vibrational band locations exhibited by the host material. The chemical composition of these materials has been ascertained by using Energy-Dispersive X-ray Spectroscopy. Optical absorption and emission measurements were employed in optical research. The evaluation process involves determining various spectroscopic parameters from the absorption spectra, Judd–Ofelt (J–O) parameters (Ω2, Ω4, Ω6), the nephelauxetic parameters (β) along with bonding parameters (δ). The calculation of radiative parameters, such as radiative transition probabilities (AT), branching ratios (βcal, βexp), and stimulated emission cross sections (σp), were performed via J–O theory. The elevated stimulated emission cross sections (σp × 10–22(cm2)) and optical gains ((σp × τrad) × 10−25cm2s) suggest that 0.5 mol% of Sm3+ doped lithium carbonate mixed borate glass composition could serve as a promising gain medium for solid-state lasers. The visible luminescence spectra of all the glasses were used to determine CIE coordinates, CCT, and colour purity.