Near-field properties of diffraction through a circular subwavelength-size aperture |
| |
| Authors: | Wang Zheng-Ling Zhou Ming Gao Chuan-Yu Zhang Wei |
| |
| Affiliation: | a. School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China;b. Department of Physics, Jiangsu University, Zhenjiang 212013, China |
| |
| Abstract: | Analytical nonparaxial vectorial electric field expressions for both Gaussian beams and plane waves diffracted through a circular aperture are derived by using the vector plane angular spectrum method for the first time, which is suitable for the subwavelength aperture and the near-field region. The transverse properties of intensity distributions and their evolutions with the propagating distance, and the power transmission functions for diffracted fields containing the whole field, the evanescent field and the propagating field are investigated in detail, which is helpful for understanding the relationship between evanescent and propagating components in the near-field region and can be applied to apertured near-field scanning optical microscopy. |
| |
| Keywords: | analytical expressions diffraction circular subwavelength aperture near-field properties |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《中国物理 B》浏览原始摘要信息 |
|
点击此处可从《中国物理 B》下载免费的PDF全文 |
|
