Verification and Spectral Separation of Up-Conversion Processes in Fluorophosphate Glass Doped with Ytterbium and Thulium Ions Based on the Dependence of Their Effective Nonlinearity on Wavelength

IF 1 4区化学 Q4 SPECTROSCOPY Journal of Applied Spectroscopy Pub Date : 2025-01-09 DOI:10.1007/s10812-025-01839-8

M. V. Korolkov, I. A. Khodasevich, A. S. Grabtchikov, G. Munkhbayar, D. S. Mogilevtsev

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Abstract

Up-conversion luminescence (UCL) spectra of fluorophosphate glasses doped with the pair of rare-earth ions (REIs) ytterbium (4%) and thulium (0.1%) excited by radiation of a diode laser operating in steady-state mode at wavelength 975 nm are studied. Each of the observed UCL bands is a result of manifestation of several up-conversion processes (UCPs) corresponding to luminescence of thulium ions from different excited states. These UCPs are characterized by different degrees of effective nonlinearity (EN). The effect of pump power on UCL spectra formed by UCPs with different ENs is studied. The possibility of separation of spectra corresponding to individual UCPs from the total experimentally measured UCL spectrum of fluorophosphate glass doped with the pair of REIs ytterbium (4%) and thulium (0.1%) is demonstrated. The separation is based on the calculation of the EN based on the dependences of the UCL on the excitation power.

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基于有效非线性波长依赖性的掺镱铥氟磷酸盐玻璃上转换过程的验证与光谱分离

研究了在波长为975 nm的稳态模式下，掺镱（4%）和铥（0.1%）对稀土离子（REIs）的氟磷酸盐玻璃的上转换发光光谱。观察到的每一个UCL波段都是几个上转换过程（ucp）的结果，对应于不同激发态下铥离子的发光。这些ucp具有不同程度的有效非线性（EN）特征。研究了泵浦功率对不同ENs的ucp形成的UCL光谱的影响。结果表明，在含REIs对镱（4%）和铥（0.1%）的氟磷酸盐玻璃中，单个ucp对应的光谱从实验测量的总UCL光谱中分离的可能性。分离是基于基于UCL对激励功率的依赖性的EN的计算。

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

Journal of Applied Spectroscopy SPECTROSCOPY-

CiteScore

1.30

自引率

14.30%

发文量

145

审稿时长

2.5 months

期刊介绍： Journal of Applied Spectroscopy reports on many key applications of spectroscopy in chemistry, physics, metallurgy, and biology. An increasing number of papers focus on the theory of lasers, as well as the tremendous potential for the practical applications of lasers in numerous fields and industries.