Near-field characteristics of highly non-paraxial subwavelength optical fields with hybrid states of polarization

doi:10.1088/1674-1056/26/10/104202

中国物理B ›› 2017, Vol. 26 ›› Issue (10): 104202-104202.doi: 10.1088/1674-1056/26/10/104202

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇下一篇

Near-field characteristics of highly non-paraxial subwavelength optical fields with hybrid states of polarization

Rui-Pin Chen(陈瑞品), Teng-Yue Gao(高腾跃), Khian-Hooi Chew(周健辉), Chao-Qing Dai(戴朝卿), Guo-Quan Zhou(周国泉), Sai-Ling He(何赛灵)

1. Department of Physics, Zhejiang Sci-Tech University, Hangzhou 310018, China;
2. Center for Theoretical Physics, Department of Physics, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia;
3. School of Sciences, Zhejiang A & F University, Lin'an 311300, China;
4. 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

收稿日期:2017-03-20 修回日期:2017-05-08 出版日期:2017-10-05 发布日期:2017-10-05
通讯作者: Rui-Pin Chen E-mail:chenrp@zstu.edu.cn
基金资助:
Project supported by the Zhejiang Provincial Natural Science Foundation, China (Grant Nos. LZ17A040001 and LY16A040014), the National Natural Science Foundation of China (Grant Nos. 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 (ZSTU), China (Grant No. 14062078-Y).

Near-field characteristics of highly non-paraxial subwavelength optical fields with hybrid states of polarization

Rui-Pin Chen(陈瑞品)¹, Teng-Yue Gao(高腾跃)¹, Khian-Hooi Chew(周健辉)², Chao-Qing Dai(戴朝卿)³, Guo-Quan Zhou(周国泉)³, Sai-Ling He(何赛灵)⁴

1. Department of Physics, Zhejiang Sci-Tech University, Hangzhou 310018, China;
2. Center for Theoretical Physics, Department of Physics, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia;
3. School of Sciences, Zhejiang A & F University, Lin'an 311300, China;
4. 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

Received:2017-03-20 Revised:2017-05-08 Online:2017-10-05 Published:2017-10-05
Contact: Rui-Pin Chen E-mail:chenrp@zstu.edu.cn
Supported by:
Project supported by the Zhejiang Provincial Natural Science Foundation, China (Grant Nos. LZ17A040001 and LY16A040014), the National Natural Science Foundation of China (Grant Nos. 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 (ZSTU), China (Grant No. 14062078-Y).

摘要/Abstract

摘要： 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.

关键词: hybrid states of polarization, evanescent wave, angular spectrum method, longitudinal component

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.

Key words: hybrid states of polarization, evanescent wave, angular spectrum method, longitudinal component

中图分类号: (Wave propagation, transmission and absorption)

42.25.Bs

42.25.Ja (Polarization) 42.60.Jf (Beam characteristics: profile, intensity, and power; spatial pattern formation)

陈瑞品, 高腾跃, 周健辉, 戴朝卿, 周国泉, 何赛灵. Near-field characteristics of highly non-paraxial subwavelength optical fields with hybrid states of polarization[J]. 中国物理B, 2017, 26(10): 104202-104202.

Rui-Pin Chen(陈瑞品), Teng-Yue Gao(高腾跃), Khian-Hooi Chew(周健辉), Chao-Qing Dai(戴朝卿), Guo-Quan Zhou(周国泉), Sai-Ling He(何赛灵). Near-field characteristics of highly non-paraxial subwavelength optical fields with hybrid states of polarization[J]. Chin. Phys. B, 2017, 26(10): 104202-104202.

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Near-field characteristics of highly non-paraxial subwavelength optical fields with hybrid states of polarization

Near-field characteristics of highly non-paraxial subwavelength optical fields with hybrid states of polarization

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