Experimental investigations on transverse spatial profile of beam in an SBS generator

机译：SBS发生器中光束横向空间分布的实验研究

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Focusing Q-switched laser pulses into FC-72 medium, the transverse profiles and spatial evolution of beam in stimulated Brillouin scattering (SBS) are investigated experimentally by CCD camera and digital image processing technology, and the rules of spot size versus pump energy are obtained. The results show that the transverse profiles of backward SBS spots with different pump energies are Gaussian or quasi-Gaussian profiles when pump beam is Gaussian. And the spatial profiles of SBS spots change from quasi-Gaussian to Gaussian when the incident energy increases from the threshold to several times the threshold. At the same time, the size of SBS spot decreases with the increasing pump energy on the whole.

机译：将调Q激光脉冲聚焦到FC-72介质中，利用CCD相机和数字图像处理技术，对受激布里渊散射（SBS）中光束的横向轮廓和空间演化进行了实验研究，得出了光斑大小与泵浦能量的关系。。结果表明，当泵浦光束为高斯时，具有不同泵浦能量的后向SBS点的横向轮廓为高斯或准高斯轮廓。当入射能量从阈值增加到阈值的几倍时，SBS点的空间分布从准高斯变为高斯。同时，随着泵浦能量的增加，SBS点的尺寸减小。

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来源
《Optoelectronic materials and devices IV》|2009年|P.76310X.1-76310X.6|共6页
会议地点 Shanghai(CN)
作者
Huaping Gong; Yongxing Jin; Dianyang Lin;
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作者单位

Institute of Opto-Electronics, China Jiliang University, Hangzhou 310018, China;

rnInstitute of Opto-Electronics, China Jiliang University, Hangzhou 310018, China;

Institute of Opto-electronics, Harbin Institute of Technology, Harbin 150080, China;

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原文格式 PDF
正文语种 eng
中图分类光电子技术、激光技术;
关键词
stimulated Brillouin scattering; phase conjugation; spatial profile; spot size;

机译：布里渊散射相位共轭空间轮廓斑点大小;

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Experimental investigations on transverse spatial profile of beam in an SBS generator

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