角向偏振无衍射光束的传输及其经过散射介质形成的散斑特性研究

发布时间：2018-04-13 03:35

本文选题：角向偏振无衍射光束 + Collins公式　；参考：《激光杂志》2017年06期

【摘要】：本文通过理论模拟和实验验证研究了角向偏振无衍射光经过圆形障碍物后具有自重建和偏振状态不随传输距离改变而改变的特性。以及角向偏振无衍射光束经过散射介质后,随着散射介质目数的增加,产生的散斑的尺寸逐渐减小.实验首先采用高斯光束经过偏振转换仪,然后再入射到轴棱锥上产生角向偏振无衍射光束。再使角向偏振无衍射光束经过散射介质形成散斑场,研究表明,随着散射介质目数的增多,形成的散斑颗粒大小也逐渐减小。随着角向偏振无衍射光束的锥角逐渐减小,形成的散斑场颗粒大小逐渐增大。理论仿真和实验结果一致。
[Abstract]:In this paper, theoretical simulation and experimental results show that angular polarized nondiffractive light has the characteristics of self-reconstruction and polarization state not changing with transmission distance after passing through circular obstacles.The size of the speckle decreases with the increase of the number of scattering media after the angular polarized nondiffractive beam passes through the scattering medium.In the experiment, Gao Si beam passes through polarization converter, and then incident to the pyramid to produce angular polarization nondiffractive beam.Then the angular polarized nondiffractive beams pass through the scattering medium to form a speckle field. It is shown that the size of the speckle particles decreases with the increase of the number of scattering media.As the conical angle of the polarized nondiffractive beam decreases, the particle size of the speckle field increases gradually.The theoretical simulation results are consistent with the experimental results.
【作者单位】：集美大学理学院;华侨大学信息科学与工程学院;
【基金】：国家自然科学基金(61178015) 福建省中青年教师教育科研项目(JAT160634)
【分类号】：O436

【相似文献】