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