Superresolution by three-zone pure phase plate with 0, pi, 0 phase variation

作者：Gao Xiumin^*; Gan Fuxi; Xu Wendong

来源：Optics and Laser Technology, 2007, 39(5): 1074-1080.

DOI：10.1016/j.optlastec.2006.04.011

• superresolution
• phase plate
• focal depth

Superresolution is very important in imaging and optical storage systems, and has attracted much attention. In this article, concentric three-zone phase plate with 0, pi, 0 phase variation has been investigated numerically to show that this kind of phase plate can be used to obtain three-dimensional superresolution. In addition, the number of intensity maximum, focal depth, focal shift, full-width half-maximum, and relative intensity of side lobe are listed for different radii of the phase zones, which paves the way for design of the phase plate. Therefore, one can choose values of radii for desired intensity distribution in focal region, such as for the purpose of radial superresolution with high focal depth in optical storage.

• 出版日期2007-7
• 单位中国科学院上海光学精密机械研究所