SrWO4晶体受激拉曼散射的各向异性

张芳; 王正平; 许心光

doi:10.3788/OPE.20142201.0039

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SrWO₄晶体受激拉曼散射的各向异性

现代应用光学 | 更新时间：2020-08-13

- SrWO₄晶体受激拉曼散射的各向异性
- Anisotropy of stimulated Raman scattering in SrWO₄ crystal
- 光学精密工程 2014年22卷第1期页码：39-43
- 作者机构：
  
  山东大学晶体材料国家重点实验室,山东济南,250100
- 作者简介：
- 基金信息：
  
  国家自然科学基金资助项目(No. 61178060)();教育部新世纪优秀人才计划资助项目(NCET-10-0552)();山东省自然科学杰出青年基金资助项目(JQ20
- DOI：10.3788/OPE.20142201.0039
  中图分类号： O734
- 收稿日期：2013-05-21，
  
  纸质出版日期：2014-01-15
- 稿件说明：
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张芳, 王正平, 许心光. SrWO4晶体受激拉曼散射的各向异性[J]. 光学精密工程, 2014,22(1): 39-43

ZHANG Fang, WANG Zheng-ping, XU Xin-guang. Anisotropy of stimulated Raman scattering in SrWO4 crystal[J]. Editorial Office of Optics and Precision Engineering, 2014,22(1): 39-43
张芳, 王正平, 许心光. SrWO4晶体受激拉曼散射的各向异性[J]. 光学精密工程, 2014,22(1): 39-43 DOI： 10.3788/OPE.20142201.0039.

ZHANG Fang, WANG Zheng-ping, XU Xin-guang. Anisotropy of stimulated Raman scattering in SrWO4 crystal[J]. Editorial Office of Optics and Precision Engineering, 2014,22(1): 39-43 DOI： 10.3788/OPE.20142201.0039.

摘要

以四方晶系SrWO

晶体为例

研究其非主轴偏振配置的受激拉曼散射特性。用532 nm皮秒脉冲激光作为泵浦源

以单次通过的方式研究了

切SrWO

晶体的受激拉曼散射增益随泵浦光偏振方向的变化

由此确定出拉曼增益的各向异性。针对由 [WO

]

四面体对称伸缩引起的924 cm

-1

的最强频移的实验显示:当入射光沿

轴和

轴偏振时

拉曼增益系数出现两个极大值

增益分别为10.1 cm/GW和14.2 cm/GW;当入射光沿

轴中分线方向偏振时

拉曼增益系数出现两个极小值

为7.1 cm/GW。结合拉曼张量及非极性晶格振动模拉曼散射强度解释了上述物理现象

证明了实验结果与理论相符。

Abstract

The relationship between stimulated Raman scattering characteristics and the polarization direction of a pump light was researched by taking an a-cut SrWO

crystal which belongs to the tetragonal crystal system as a research object. Using a 532 nm light as the pump source and a single passing way as implementation

the anisotropy for the SRS’ gain of

-cut SrWO

crystal was determined. The experimental results on the strongest Raman frequency shifting of 924 cm

-1

come from the symmetrical stretching vibration of [WO

]

tetrahedron show that the gain coefficients appear two maximum values of 10.1 cm/GW and 14.2 cm/GW respectively when the pump light is polarized on

and

axes

and the gain coefficients present two of the same minimal values of 7.1 cm/GW when the pump light is polarized along the bisector of

and

axes. The results are interpreted using a Raman tensor and the nonpolar Raman scattering intensity theory

which demonstrates that experimental results in this paper are in good agreement with that of the theory.

关键词

Keywords

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