Planar binary-phase lens for super-oscillatory optical hollow needles
Chen, Gang1; Wu, Zhixiang1; Yu, Anping1; Zhang, Kun1,2; Wu, Jing1; Dai, Luru2; Wen, Zhongquan1; He, Yinghu1,4; Zhang, Zhihai1; Jiang, Senlin1; Wang, Changtao3; Luo, Xiangang3
2017
发表期刊Scientific Reports
ISSN2045-2322
卷号7
摘要Optical hollow beams are suitable for materials processing, optical micromanipulation, microscopy, and optical lithography. However, conventional optical hollow beams are diffraction-limited. The generation of sub-wavelength optical hollow beams using a high numerical aperture objective lens and pupil filters has been theoretically proposed. Although sub-diffraction hollow spot has been reported, nondiffracting hollow beams of sub-diffraction transverse dimensions have not yet been experimentally demonstrated. Here, a planar lens based on binary-phase modulation is proposed to overcome these constraints. The lens has an ultra-long focal length of 300 lambda. An azimuthally polarized optical hollow needle is experimentally demonstrated with a super-oscillatory transverse size (less than 0.38 lambda/NA) of 0.34 lambda to 0.42 lambda, where lambda is the working wavelength and NA is the lens numerical aperture, and a large depth of focus of 6.5 lambda. For a sub-diffraction transverse size of 0.34 lambda to 0.52 lambda, the nondiffracting propagation distance of the proposed optical hollow needle is greater than 10 lambda. Numerical simulation also reveals a good penetrability of the proposed optical hollow needle at an air-water interface, where the needle propagates through water with a doubled propagation distance and without loss of its superoscillatory property. The proposed lens is suitable for nanofabrication, optical nanomanipulation, superresolution imaging, and nanolithography applications.
关键词DIFFRACTION-FREE BEAMS LONG FOCAL LENGTH POLARIZED-LIGHT NONDIFFRACTING BEAMS GENERATION AMPLITUDE BESSEL CREATION OPTIMIZATION MODULATION
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.ioe.ac.cn/handle/181551/8892
专题微细加工光学技术国家重点实验室(开放室)
作者单位1.Chongqing Univ, Minist Educ, Key Lab Optoelect Technol & Syst, 173 Shazheng St, Chongqing 400044, Peoples R China
2.Chongqing Univ, Key Disciplines Lab Novel Micronano Devices & Sy, 173 Shazheng St, Chongqing 400044, Peoples R China
3.Natl Ctr Nanosci & Technol, 11 Zhong Guan CunBei Yi Tiao, Beijing 100190, Peoples R China
4.Chinese Acad Sci, State Key Lab Opt Technol Nanofabricat & Microeng, Inst Opt & Elect, PRBox 350, Chengdu 610209, Peoples R China
5.Dept Phys, Zunyi Normal Coll, Zunyi 563006, Peoples R China
推荐引用方式
GB/T 7714
Chen, Gang,Wu, Zhixiang,Yu, Anping,et al. Planar binary-phase lens for super-oscillatory optical hollow needles[J]. Scientific Reports,2017,7.
APA Chen, Gang.,Wu, Zhixiang.,Yu, Anping.,Zhang, Kun.,Wu, Jing.,...&Luo, Xiangang.(2017).Planar binary-phase lens for super-oscillatory optical hollow needles.Scientific Reports,7.
MLA Chen, Gang,et al."Planar binary-phase lens for super-oscillatory optical hollow needles".Scientific Reports 7(2017).
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