Laser Characteristics of Er3+/Yb3+:K-BaF2-Al-Phosphate Glasses

IF 3.2 4区化学 Q2 CHEMISTRY, ANALYTICAL

Luminescence Pub Date : 2024-11-20 DOI:10.1002/bio.70019

Praveena Ravipati, Surendra Babu Sajja, Babu Palamandala, Jayasankar Chalicheemalpalli Kulala

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引用次数: 0

Abstract

Er³⁺ and Er³⁺/Yb³⁺-doped phosphate-based glasses have been synthesized by melt quenching technique and are characterized by absorption spectra, infrared emission, decay curves, Fourier transform infrared spectrum and up-conversion studies. From the absorption spectra, intensity parameters and radiative properties have been derived utilizing the Judd–Ofelt theory. Er³⁺-doped glass is found to have larger radiative lifetime for the laser originating from ⁴I_13/2 level at 1537 nm. Infrared and visible characteristic emissions have been measured by exciting at 790 nm through down- and up-conversion, respectively. The up-conversion spectra consist of intense green emission at around 525 and 545 nm ascribed to the ²H_11/2 → ⁴I_15/2 and ⁴S_3/2 → ⁴I_15/2 transitions, respectively, and a weak red emission at around 656 nm due to the ⁴F_9/2 → ⁴I_15/2 transition of Er³⁺ ions. Various spectroscopic and laser characteristics of these glasses have been calculated and compared with those of similar reported ones.

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Er3+/Yb3+:K-BaF2-Al 磷酸盐玻璃的激光特性

利用熔体淬火技术合成了 Er3+ 和 Er3+/Yb3+ 掺杂磷酸盐基玻璃，并通过吸收光谱、红外发射、衰减曲线、傅里叶变换红外光谱和上转换研究对其进行了表征。根据吸收光谱，利用 Judd-Ofelt 理论推导出了强度参数和辐射特性。发现掺有 Er3+ 的玻璃在波长为 1537 纳米的 4I13/2 级激光中具有较大的辐射寿命。通过下转换和上转换，在 790 纳米波长处分别激发测量了红外和可见光特征发射。上转换光谱包括 525 和 545 纳米波长处的强烈绿色发射，分别归因于 2H11/2 → 4I15/2 和 4S3/2 → 4I15/2 转变，以及 656 纳米波长处的微弱红色发射，归因于 Er3+ 离子的 4F9/2 → 4I15/2 转变。对这些玻璃的各种光谱和激光特性进行了计算，并与已报道的类似玻璃进行了比较。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Luminescence 生物-生化与分子生物学

CiteScore

5.10

自引率

13.80%

发文量

248

审稿时长

3.5 months

期刊介绍： Luminescence provides a forum for the publication of original scientific papers, short communications, technical notes and reviews on fundamental and applied aspects of all forms of luminescence, including bioluminescence, chemiluminescence, electrochemiluminescence, sonoluminescence, triboluminescence, fluorescence, time-resolved fluorescence and phosphorescence. Luminescence publishes papers on assays and analytical methods, instrumentation, mechanistic and synthetic studies, basic biology and chemistry. Luminescence also publishes details of forthcoming meetings, information on new products, and book reviews. A special feature of the Journal is surveys of the recent literature on selected topics in luminescence.