量子电子学报 ›› 2022, Vol. 39 ›› Issue (1): 127-135.doi: 10.3969/j.issn.1007-5461.2022.01.009

• "轨道角动量:从经典光学到量子信息”专辑 • 上一篇    下一篇

高阶衍射级光束的轨道角动量

樊海豪1 , 朱刘昊 1 , 台玉萍2 , 李新忠 1,3∗   

  1. ( 1 河南科技大学物理工程学院, 河南 洛阳 471023; 2 河南科技大学化工与制药学院, 河南 洛阳 471023; 3 中国科学院西安光学精密机械研究所瞬态光学与光子技术国家重点实验室, 陕西 西安 710119 )
  • 收稿日期:2021-09-28 修回日期:2021-11-02 出版日期:2022-01-28 发布日期:2022-01-28
  • 通讯作者: E-mail: xzli@haust.edu.cn E-mail:E-mail: xzli@haust.edu.cn
  • 作者简介:樊海豪 ( 1997 - ), 河南安阳人, 研究生, 主要从事光场调控方面的研究。 E-mail: fanhaihao1997@163.com
  • 基金资助:
    Supported by National Natural Science Foundation of China (国家自然科学基金, 11974102), Key Scientific Research Projects of Institutions of Higher Learning of Henan Province Education Department (河南省教育厅高等学校重点科研项目, 21zx002), State Key Laboratory of Transient Optics and Photonics (瞬态光学与光子学国家重点实验室, SKLST201901)

Orbital angular momentum of higher-order diffraction beams

FAN Haihao 1 , ZHU Liuhao 1 , TAI Yuping 2 , LI Xinzhong 1,3∗   

  1. ( 1 School of Physics and Engineering, Henan University of Science and Technology, Luoyang 471023, China; 2 School of Chemical Engineering and Pharmaceutics, Henan University of Science and Technology, Luoyang 471023, China; 3 State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics of Chinese Academy of Sciences, Xi’an 710119, China )
  • Received:2021-09-28 Revised:2021-11-02 Published:2022-01-28 Online:2022-01-28

摘要: 为研究高阶衍射级光束的轨道角动量, 基于计算全息法在空间光调制器的傅里叶平面产生了不同衍射 级的完美涡旋光束, 并利用球面波干涉法对其拓扑荷值进行了测量。理论和实验结果表明不同衍射级 p 上的整 数阶和分数阶完美涡旋光束的拓扑荷值 l 都满足 l = mp 的关系, 其中 m 是相位掩模板的拓扑荷值。并进一步对 不同衍射级的光学涡旋阵列进行了实验研究, 结果表明光学涡旋阵列中光学涡旋的拓扑荷值满足 l = p 的关系, 高阶衍射级上的衍射光束比 +1 级衍射光束具有更大的轨道角动量。该研究为光学涡旋及光学涡旋阵列进一步 的研究及应用提供了理论和实验参考。

关键词: 傅里叶光学, 轨道角动量, 计算全息, 完美涡旋光束, 光学涡旋阵列

Abstract: In order to study the orbital angular momentum of higher-order diffraction beams, based on the method of computer generated holography, the perfect vortex beam with different diffraction orders is generated on the Fourier plane of space light modulator, and its topological charge is measured by spherical wave interferometry. Theoretical and experimental results show that the topological charge l of integer and fractional perfect vortex beams at different diffraction order p satisfies the relation of l = mp , where m is the topological charge of the phase mask. Furthermore, the optical vortex array with different diffraction order is also studied experimentally, the results show that the topological charge of optical vortices satisfies the relation of l = p , and the higher-order diffraction beam has greater orbital angular momentum than the diffraction beam at the +1 order. This study provides theoretical and experimental reference for further research and application of optical vortices and optical vortex arrays

Key words: Fourier optics, orbital angular momentum, computer generated holography, perfect vortex beam, optical vortex array

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