Particle manipulation beyond the diffraction limit using structured super-oscillating light beams

作     者：Brijesh K Singh Harel Nagar Yael Roichman Ady Arie 

作者机构：School of Electrical EngineeringFleischman Faculty of EngineeringTel-Aviv UniversityTel Aviv 6997801Israel Department of PhysicsCentral University of RajasthanAjmerRajasthan 305817India Raymond and Beverly Sackler School of ChemistryTel Aviv UniversityTel Aviv 6997801Israel 

出 版 物：《Light(Science & Applications)》 (光（科学与应用)（英文版）)

年 卷 期：2017年第6卷第1期

页      面：542-547页

核心收录：

学科分类：07[理学] 0701[理学-数学] 070101[理学-基础数学] 

基　　金：the Israel Science Foundation(ISF)Grant No.(1310/13) Center for Nanoscience and Nanotechnology,Tel Aviv University for their financial support 

主　　题：beam shaping optical tweezers optical vortex super-oscillating beams 

摘      要：The diffraction-limited resolution of light focused by a lens was derived in 1873 by Ernst *** in 1952,a method to reach sub-diffraction light spots was proposed by modulating the wavefront of the focused *** a related development,super-oscillating functions,that is,band-limited functions that locally oscillate faster than their highest Fourier component,were introduced and experimentally applied for super-resolution *** till now,only simple Gaussian-like sub-diffraction spots were *** we show that the amplitude and phase profile of these sub-diffraction spots can be arbitrarily *** particular,we utilize Hermite–Gauss,Laguerre–Gauss and Airy functions to structure super-oscillating beams with subdiffraction *** structured beams are then used for high-resolution trapping and manipulation of nanometer-sized *** trapping potential provides unprecedented localization accuracy and stiffness,significantly exceeding those provided by standard diffraction-limited beams.