Digital plasmonic holography  

作　　者：Joseph W.Nelson Greta R.Knefelkamp Alexandre G.Brolo Nathan C.Lindquist 

机构地区：[1]Department of Physics and Engineering,Bethel University,3900 Bethel Drive,St Paul,MN 55112,USA [2]Department of Chemistry,University of Victoria,3800 Finnerty Road,Victoria,BC V8P 5C2,Canada [3]Center for Advanced Materials and Related Technologies(CAMTEC),University of Victoria,3800 Finnerty Road,Victoria,BC V8P 5C2,Canada

出　　处：《Light(Science & Applications)》2018年第1期572-582,共11页光（科学与应用)（英文版）

基　　金：supported by the National Science Foundation through CAREER grant#1552642;funds from the NSERC Discovery Grant program and from the Canada Foundation for Innovation(CFI)through the Prometheus project.

摘　　要：We demonstrate digital plasmonic holography for direct in-plane imaging with propagating surface-plasmon waves.Imaging with surface plasmons suffers from the lack of simple in-plane lenses and mirrors.Lens-less digital holography techniques,however,rely on digitally decoding an interference pattern between a reference wave and an object wave.With far-field diffractive optics,this decoding scheme provides a full recording,i.e.,a hologram,of the amplitude and phase of the object wave,giving three-dimensional information from a two-dimensional recording.For plasmonics,only a one-dimensional recording is needed,and both the phase and amplitude of the propagating plasmons can be extracted for high-resolution in-plane imaging.Here,we demonstrate lens-less,point-source digital plasmonic holography using two methods to record the plasmonic holograms:a dual-probe near-field scanning optical microscope and lithographically defined circular fluorescent screens.The point-source geometry gives in-plane magnification,allowing for high-resolution imaging with relatively lower-resolution microscope objectives.These results pave the way for a new form of in-plane plasmonic imaging,gathering the full complex wave,without the need for plasmonic mirrors or lenses.

关 键 词：PLASMON RECORDING PLANE 

分 类 号：TB8[一般工业技术—摄影技术]