A Three-zone Ternary Phase Superresolving Diffractive Optical Element
Based on the vector diffraction theory,a three-zone ternary phase diffractive optical element is designed to improve the resolution of near-field optical storage systems with a solid immersion lens(SIL).When the designed three-zone ternary phase diffractive optical element is inserted in the near-filed SIL optical recording system,the focused spot size decreases 21%,and at the same time the side-lobes intensity is limited within 10%.However,the spot intensity descends merely 20%.Compared with the existing three-zone binary diffractive optical element,under the condition of the identical central spot intensity,the designed diffractive optical element has better superresolving effect.
Yaoju Zhang Chaolong Fang Xianjie Wang
College of Physic and Electronic Information Engineering,Wenzhou University Wenzhou 325035,Zhejiang,China
国际会议
Progress in Electromagnetics Research Symposium 2011(2011年电磁学研究新进展学术研讨会)
苏州
英文
330-333
2011-09-01（万方平台首次上网日期，不代表论文的发表时间）