Jie Lin,Jian Guan,Jiubin Tan,et al. Sub-wavelength focusing generated by radially polarized doughnut Gaussian beams[EB/OL]. Beijing:Sciencepaper Online[2014-01-09]. http://www.paper.edu.cn/releasepaper/content/201401-447. 此文件来自 中国科技论文在线 请勿作用于商业用途!