Rudin-Shapiro光子筛  

Rudin-Shapiro Photon Sieve

作　　者：钟素艺 夏天 王草源 彭操 陶少华[1,2] Zhong Suyi1, Xia Tian1, Wang Caoyuan1, Peng Cao1, Tao Shaohua1,2(1Physics Science and Electronics, Central South University, Changsha, Hunan 410083, China ; 2 Hunan Provincial Key Laboratory of Super-Microstructure and Ultra fast Process, Central South University Changsha, Hunan 410083, China)

机构地区：[1]中南大学物理与电子学院,湖南长沙410083 [2]中南大学超微结构与超快过程湖南省重点实验室,湖南长沙410083

出　　处：《激光与光电子学进展》2018年第10期69-75,共7页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(11674401);本科生自由探索计划项目(201710533277)

摘　　要：基于Rudin-Shapiro(RS)非周期序列,提出了一种能简易制作且可在轴向产生两个低色差图像的RS光子筛(RSPS)。基于角谱理论,研究了光子筛筛孔的最小直径与对应波带片的最外环宽度的比值对RSPS聚焦特性的影响,数值仿真结果表明,当光子筛筛孔的最小直径是对应波带片最外环宽度的1.398倍时,RSPS能在轴向产生相同的高强度的双焦点。不同于RS波带片(RSZP)的环带结构,RSPS的孔状结构更容易制作。此外,对比分析了RSPS、RSZP和Thue-Morse波带片(TMZP)的聚焦成像特性,理论研究结果表明,RSPS在轴向两个焦平面产生的图像的色差比TMZP的色差低,与RSZP的色差近似一样。因此,RSPS在多色成像,X射线显微等领域将具有广阔的应用前景。A Rudin-Shapiro photon sieve （RSPS） based on the Rudin-Shapiro （RS） aperiodic sequence is proposed. The RSPS can be fabricated conveniently and generate two images with low chromatic aberration. The plane wave angular spectrum theory is used to study the focusing properties of the RSPSs with different ratios of the diameter of the smallest hole of the sieve to the width of the outermost ring of the corresponding zone plate. The numerical simulation results show that when the ratio is 1. 398, the RSPS generates twin foci with the same high intensities in the axial direction. Compared with the RS zone plate （RSZP）, the RSPS has more tolerance in the fabrication. It is found that the chromatic aberration generated by RSPS is lower than that by Thue-Morse zone plate （TMZP） and approximately the same as that by RSZP. Hence, the RSPS will have potential applications in the fields of the polychromatic imaging, X-ray microscopy and so on.

关 键 词：Rudin-Shapiro 光子筛 色差 波带片 

分 类 号：O436[机械工程—光学工程]