超振荡及其远场聚焦成像研究进展  

Progress in far-field focusing and imaging with super-oscillation

作　　者：蒋忠君[1] 刘建军[1,2] 

机构地区：[1]湖南大学物理与微电子科学学院,微纳光电器件及应用教育部重点实验室,长沙410082 [2]纽约州立大学布法罗分校,激光、光子学及生物光子学研究所,美国布法罗14260

出　　处：《物理学报》2016年第23期1-11,共11页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:61405058)资助的课题~~

摘　　要：带限函数在某区间内的振荡速度超过其最高傅里叶分量的特殊性质被称为超振荡.基于超振荡原理的微纳光子学器件可在不依赖倏逝波条件下于远场处突破衍射极限,因此在超分辨成像、纳米光刻及高密度光存储等领域具有重要应用.简要介绍了超振荡原理,重点归纳了几种超振荡微结构器件的设计及其聚焦成像性能,并指出了这些器件的不足及未来的研究重点.Superoscillation is known as a counter-intuitive property of a band-limited function that oscillates faster than its highest Fourier component in a prescribed interval. Based on superoscillation, micro/nano optical devices, breaking through the diffraction limit in the far-field independent of evanescent waves, have potential applications, including super-resolution, nano-photolithography, high-density optical storage, etc. In this paper, superoscillation is introduced simply, and several optical superoscillatory designs with focusing and imaging abilities are summarized primarily, and some defects and future research emphases in these designs are pointed out.

关 键 词：超振荡 亚波长 聚焦 超分辨 

分 类 号：TH74[机械工程—光学工程] TN820.15[机械工程—仪器科学与技术]