| YVO4晶体及其掺Nd的喇曼光谱 |
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| 引用本文： | 许瑞珍,陈金铠.YVO4晶体及其掺Nd的喇曼光谱[J].光谱学与光谱分析,2001,21(4):489-491. |
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| 作者姓名： | 许瑞珍 陈金铠 |
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| 作者单位： | 1. 福建师范大学物理系,
2. 福建师范大学物理系实验中心, |
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| 摘 要： | 本文报道了对YVO4晶体及其掺Nd的喇曼光谱的测量结果，用这些结果可以了解到这种材料的声子能谱情况，在与其它基质材料比较中可以看出它的特点是：分立的低声子在500－800cm^-1之间有一个间隙，主要部分分布在800－900cm^-1附近，根据群论分析可以得出各喇曼谱线相应的对称性，而且可看出这些喇曼谱线主要来源于VO4^3-的振动，对这种不均匀分布的声子能变对于其光谱性能可能产生的影响也作了分析讨论，测量结果还发现掺杂能抑制原有的高能声子。
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| 关 键 词： | YVO4晶体 Nd：YVO4晶体 喇曼光谱 声子能量 钒酸钇 钕 掺杂 激光材料 |
| 修稿时间： | 2001年3月5日 |
Raman Spectra for YVO4 and Nd:YVO4 Crystals |
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| R Xu,J Chen.Raman Spectra for YVO4 and Nd:YVO4 Crystals[J].Spectroscopy and Spectral Analysis,2001,21(4):489-491. |
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| Authors: | R Xu J Chen |
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| Institution: | Department of Pyhsics, Fujian Teachers University, 350007 Fuzhou. |
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| Abstract: | In this paper, the measured Raman spectra of YVO4 and Nd: YVO4 crystals were reported. These results give a clear information on the phonon energy spectra, these are several discrete phonons in low energy region, then nothing shows up in a large space from 500-800 cm-1 and main portion of phonon spectra is distributed in the region of 800-900 cm-1. Based on the group theory, the symmetries for Raman lines can be deduced, and they are almost due to the vibration of VO(4)3- ion. The effect of uneven distribution for phonon spectra on the optical transition and laser performance are discussed. The restraint action of doped ion on the high energy phonon is found. |
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