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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Er~(3+)-doped strontium lithium bismuth borate glasses for broadband 1.5 μm emission - Structural and optical properties
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Er~(3+)-doped strontium lithium bismuth borate glasses for broadband 1.5 μm emission - Structural and optical properties

机译：掺Er〜（3+）的锶硼酸铋锂玻璃，用于1.5μm宽带发射-结构和光学性能

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摘要

Strontium lithium bismuth borate glasses (SLBiB) doped with various concentrations of Er~(3+) were prepared using conventional melt quenching technique and investigated their structural and optical properties. The structural properties were investigated using XRD and FTIR spectra. XRD analysis confirmed amorphous nature of glass samples. FTIR spectra were used to find the functional groups in the glass matrices. Optical properties were studied by measuring the optical absorption and near infrared luminescence spectra. Judd-Ofelt (J-O) theory has been applied to evaluate J-O intensity parameters, Ω_λ (λ = 2,4 and 6) and are used to estimate radiative properties like transition probabilities (A), branching ratios (β) and radiative lifetimes (τ_r) for certain transitions. Among all transitions, ~4I_(13/2) -> ~4I_(15/2) transition shows higher branching ratio as well as higher radiative lifetime values. Peak emission-cross sections (σ_e), full-width at half maximum (FWHM) and products of stimulated emission cross-section and full-width at half maximum (σ_e × FWHM) were calculated for the observed emission transition, ~4I_(13/2) -> ~4I_(15/2). These values are higher for 1.0 mol% of Er~(3+) glass matrix among all glass matrices. Using the Mc-Cumber theory, stimulated emission cross-sections (σ_e) were obtained from absorption cross-section (σ_a).
机译：采用常规的熔融淬火技术制备了掺有不同浓度的Er〜（3+）的锶硼酸铋锂玻璃（SLBiB），并对其结构和光学性能进行了研究。使用XRD和FTIR光谱研究了结构性能。 XRD分析证实玻璃样品的无定形性质。 FTIR光谱用于发现玻璃基质中的官能团。通过测量光吸收和近红外发光光谱来研究光学性质。 Judd-Ofelt（JO）理论已应用于评估JO强度参数Ω_λ（λ= 2,4和6），并用于估计辐射特性，例如跃迁几率（A），分支比（β）和辐射寿命（τ_r ）进行某些转换。在所有过渡中，〜4I_（13/2）->〜4I_（15/2）过渡显示出更高的分支比以及更高的辐射寿命值。对于观察到的发射跃迁，计算了峰值发射截面（σ_e），半峰全宽（FWHM）和受激发射截面与半峰全宽（σ_e×FWHM）的乘积，约为〜4I_（13 / 2）->〜4I_（15/2）。在所有玻璃基质中，对于1.0 mol％的Er〜（3+）玻璃基质，这些值更高。使用Mc-Cumber理论，从吸收截面（σ_a）获得受激发射截面（σ_e）。

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