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Experimental generation of a neat semi Gaussian laser beam with a coherence attenuator

Bin FANG Ya-ling YIN Zhang-dong YE Zhi-xiang MAO Chao-xiu GUO Yong XIA

方彬, 尹亚玲, 叶张东, 茅志翔, 郭超修, 夏勇. 基于相干衰减器的半高斯激光束的产生实验研究[J]. 华东师范大学学报(自然科学版), 2017, (3): 87-93, 132. doi: 10.3969/j.issn.1000-5641.2017.03.009
引用本文: 方彬, 尹亚玲, 叶张东, 茅志翔, 郭超修, 夏勇. 基于相干衰减器的半高斯激光束的产生实验研究[J]. 华东师范大学学报(自然科学版), 2017, (3): 87-93, 132. doi: 10.3969/j.issn.1000-5641.2017.03.009
FANG Bin, YIN Ya-ling, YE Zhang-dong, MAO Zhi-xiang, GUO Chao-xiu, XIA Yong. Experimental generation of a neat semi Gaussian laser beam with a coherence attenuator[J]. Journal of East China Normal University (Natural Sciences), 2017, (3): 87-93, 132. doi: 10.3969/j.issn.1000-5641.2017.03.009
Citation: FANG Bin, YIN Ya-ling, YE Zhang-dong, MAO Zhi-xiang, GUO Chao-xiu, XIA Yong. Experimental generation of a neat semi Gaussian laser beam with a coherence attenuator[J]. Journal of East China Normal University (Natural Sciences), 2017, (3): 87-93, 132. doi: 10.3969/j.issn.1000-5641.2017.03.009

基于相干衰减器的半高斯激光束的产生实验研究

doi: 10.3969/j.issn.1000-5641.2017.03.009
基金项目: 国家自然科学基金(11274114);华东师范大学大夏基金(2014DX-055)
详细信息
    作者简介:
  • 中图分类号: O431

Experimental generation of a neat semi Gaussian laser beam with a coherence attenuator

More Information
    Corresponding author: 尹亚玲, 女, 副教授, 研究方向为激光光学、材料光学、原子分子与量子光学.E-mail: ylyin@phy.ecnu.edu.cn
  • 摘要: 根据之前的理论分析(Yaling Yin, et al, Opt. Commun. 281(22), 5511(2008)), 实验上设计了一个由相干衰减器和锋利薄刀片构成的产生无衍射条纹的纯净半高斯激光束的简单光学装置.装置中相干衰减器由两片有机玻璃片和一片塑料薄膜构成, 并由马达驱动, 该相干衰减器可以有效降低激光场的相干度.实验中, 选择氦-氖激光作为实验光源, 在传输位置z=0.5 cm处获得了品质因子QSGB=1:16.42的无衍射条纹的纯净半高斯激光束.实验结果显示, 产生的半高斯激光束的品质因子随着传输距离的增加而减少, 产生的半高斯激光束的陡峭上升沿的宽度与入射高斯光束的波长和束腰半径无关, 这与之前的理论计算结果一致.实验上产生的半高斯激光束因为具有非对称性的强度分布、优良的空间传输特性, 所以在现代光学中有广泛的应用.
  • Fig.  1  The simplified SGB experimental setup that we perform in the experiments

    Fig.  2  (a) the picture of the transparent plastic film detected by the microscope; (b) the picture of the complete coherence attenuator

    Fig.  3  The 2D light intensity distributions of the incident Gaussian laser beam (a), the generated SGB at the propagating position z=2 cm (c) and z=10.5 cm (e); The 1D light intensity profiles of the incident Gaussian laser beam (b) and the generated SGB at the propagating position z=2 cm (d) and z=10.5 cm (f) along the x-axis

    Fig.  4  The relationship between 1/QSGB of the generated SGB and the propagating distance z away from the blade

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出版历程
  • 收稿日期:  2016-04-16
  • 刊出日期:  2017-05-25

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