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2017 Volume 26 Issue 10
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Rui-Pin Chen, Teng-Yue Gao, Khian-Hooi Chew, Chao-Qing Dai, Guo-Quan Zhou, Sai-Ling He. 2017: Near-field characteristics of highly non-paraxial subwavelength optical fields with hybrid states of polarization, Chinese Physics B, 26(10): 219-225. doi: 10.1088/1674-1056/26/10/104202
Citation: Rui-Pin Chen, Teng-Yue Gao, Khian-Hooi Chew, Chao-Qing Dai, Guo-Quan Zhou, Sai-Ling He. 2017: Near-field characteristics of highly non-paraxial subwavelength optical fields with hybrid states of polarization, Chinese Physics B, 26(10): 219-225. doi: 10.1088/1674-1056/26/10/104202
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Near-field characteristics of highly non-paraxial subwavelength optical fields with hybrid states of polarization

  • Department of Physics, Zhejiang Sci-Tech University, Hangzhou 310018, China

  • Center for Theoretical Physics, Department of Physics, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia

  • School of Sciences, Zhejiang A & F University, Lin'an 311300, China

  • Center for Optical and Electromagnetic Research, Zhejiang University, Joint Research Center of Photonics of the Royal Institute of Technology(Sweden)and Zhejiang University(China), Hangzhou 310027, China

  • Available Online: 30/12/2017
  • Fund Project: the Zhejiang Provincial Natural Science Foundation,China(Grant .LZ17A040001 and LY16A040014)%the National Natural Science Foundation of China(Grant .11574271 and 11574272)%the Scientific Research Foundation for the Returned Overseas Chinese Scholars,State Education Ministry.and the Science Research Foundation of Zhejiang Sci-Tech University%China(Grant 14062078-Y)
  • The vectorial structure of an optical field with hybrid states of polarization (SoP) in the near-field is studied by using the angular spectrum method of an electromagnetic beam.Physical images of the longitudinal components of evanescent waves are illustrated and compared with those of the transverse components from the vectorial structure.Our results indicate that the relative weight integrated over the transverse plane of the evanescent wave depends strongly on the number of the polarization topological charges.The shapes of the intensity profiles of the longitudinal components are different from those of the transverse components,and it can be manipulated by changing the initial SoP of the field cross-section.The longitudinal component of evanescent wave dominates the near-field region.In addition,it also leads to three-dimensional shape variations of the optical field and the optical spin angular momentum flux density distributions.
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Near-field characteristics of highly non-paraxial subwavelength optical fields with hybrid states of polarization

  • Available Online: 30/12/2017

Abstract: The vectorial structure of an optical field with hybrid states of polarization (SoP) in the near-field is studied by using the angular spectrum method of an electromagnetic beam.Physical images of the longitudinal components of evanescent waves are illustrated and compared with those of the transverse components from the vectorial structure.Our results indicate that the relative weight integrated over the transverse plane of the evanescent wave depends strongly on the number of the polarization topological charges.The shapes of the intensity profiles of the longitudinal components are different from those of the transverse components,and it can be manipulated by changing the initial SoP of the field cross-section.The longitudinal component of evanescent wave dominates the near-field region.In addition,it also leads to three-dimensional shape variations of the optical field and the optical spin angular momentum flux density distributions.

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