可见-近红外波段 Ho3+:YLF 的光谱分析和发射特性

IF 3.3 3区 物理与天体物理 Q2 OPTICS
Wei Yuan , Rongbin Dai , Zheng Zhang , Xiuji Lin , Huiying Xu , Zhiping Cai
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引用次数: 0

摘要

为了研究 Ho3+:YLiF4(Ho3+:YLF)的光谱特性,我们测量了 Ho3+:YLF 晶体的吸收光谱。根据 Judd-Ofelt 理论计算了实验和计算的电偶极线强度以及其他光谱参数。为了表征能级的发射特性,我们测量了在 450 nm 和 640 nm 激光泵浦下 Ho3+:YLF 晶体的发射光谱,并根据 Fuchtbauer-Ladenburg 理论计算了部分发射截面光谱。此外,还测量了 537 nm、656 nm、750 nm、1195 nm 和 1964 nm 的荧光寿命。据我们所知,1964 nm 的荧光寿命(∼2 μm)以及 ∼750 nm 和 ∼961 nm 的发射截面都是首次得到证实。这项工作为在 Ho3+:YLF 晶体上产生新波长的激光奠定了基础。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Spectral analysis and emission properties of Ho3+: YLF in the visible-near infrared band
In order to study the spectral properties of Ho3+:YLiF4 (Ho3+:YLF), we measured the absorption spectra f Ho3+:YLF crystal. The experimental and calculated electric dipole line strength are calculated based on Judd-Ofelt theory, so do other spectral parameters. In order to characterize the emission characteristics of energy level, we measured the emission spectra of Ho3+:YLF crystal under the pumping of lasers at 450 nm and 640 nm, and the partial emission cross-sections spectra was calculated according to the Fuchtbauer-Ladenburg theory. Moreover, the fluorescence lifetimes of 537 nm, 656 nm, 750 nm, 1195 nm and 1964 nm are measured. As far as we know, the fluorescence lifetime of 1964 nm (∼2 μm) and the emission cross-sections of ∼750 nm and ∼961 nm are confirmed for the first time. This work lays the foundation for the generation of lasing at novel wavelength on Ho3+:YLF crystal.
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来源期刊
Journal of Luminescence
Journal of Luminescence 物理-光学
CiteScore
6.70
自引率
13.90%
发文量
850
审稿时长
3.8 months
期刊介绍: The purpose of the Journal of Luminescence is to provide a means of communication between scientists in different disciplines who share a common interest in the electronic excited states of molecular, ionic and covalent systems, whether crystalline, amorphous, or liquid. We invite original papers and reviews on such subjects as: exciton and polariton dynamics, dynamics of localized excited states, energy and charge transport in ordered and disordered systems, radiative and non-radiative recombination, relaxation processes, vibronic interactions in electronic excited states, photochemistry in condensed systems, excited state resonance, double resonance, spin dynamics, selective excitation spectroscopy, hole burning, coherent processes in excited states, (e.g. coherent optical transients, photon echoes, transient gratings), multiphoton processes, optical bistability, photochromism, and new techniques for the study of excited states. This list is not intended to be exhaustive. Papers in the traditional areas of optical spectroscopy (absorption, MCD, luminescence, Raman scattering) are welcome. Papers on applications (phosphors, scintillators, electro- and cathodo-luminescence, radiography, bioimaging, solar energy, energy conversion, etc.) are also welcome if they present results of scientific, rather than only technological interest. However, papers containing purely theoretical results, not related to phenomena in the excited states, as well as papers using luminescence spectroscopy to perform routine analytical chemistry or biochemistry procedures, are outside the scope of the journal. Some exceptions will be possible at the discretion of the editors.
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