Electromagnetic density of states in complex plasmonic systems

IF 8.2 1区 化学 Q1 CHEMISTRY, PHYSICAL
R. Carminati , A. Cazé , D. Cao , F. Peragut , V. Krachmalnicoff , R. Pierrat , Y. De Wilde
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引用次数: 148

Abstract

Nanostructured materials offer the possibility to tailor light–matter interaction at scales below the wavelength. Metallic nanostructures benefit from the excitation of surface plasmons that permit light concentration at ultrasmall length scales and ultrafast time scales. The local density of states (LDOS) is a central concept that drives basic processes of light–matter interaction such as spontaneous emission, thermal emission and absorption. We introduce theoretically the concept of LDOS, emphasizing the specificities of plasmonics. We connect the LDOS to real observables in nanophotonics, and show how the concept can be generalized to account for spatial coherence. We describe recent methods developed to probe or map the LDOS in complex nanostructures ranging from nanoantennas to disordered metal surfaces, based on dynamic fluorescence measurements or on the detection of thermal radiation.

复杂等离子体系统中状态的电磁密度
纳米结构材料提供了在波长以下尺度上调整光-物质相互作用的可能性。金属纳米结构受益于表面等离子激元的激发,它允许光在超小长度尺度和超快时间尺度上集中。局域态密度(LDOS)是驱动光-物质相互作用的自发发射、热发射和吸收等基本过程的核心概念。我们从理论上介绍了LDOS的概念,强调了等离子体的特殊性。我们将LDOS与纳米光子学中的真实可观测物联系起来,并展示了如何将该概念推广到空间相干性。我们描述了基于动态荧光测量或热辐射检测的复杂纳米结构(从纳米天线到无序金属表面)中探测或绘制LDOS的最新方法。
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来源期刊
Surface Science Reports
Surface Science Reports 化学-物理:凝聚态物理
CiteScore
15.90
自引率
2.00%
发文量
9
审稿时长
178 days
期刊介绍: Surface Science Reports is a journal that specializes in invited review papers on experimental and theoretical studies in the physics, chemistry, and pioneering applications of surfaces, interfaces, and nanostructures. The topics covered in the journal aim to contribute to a better understanding of the fundamental phenomena that occur on surfaces and interfaces, as well as the application of this knowledge to the development of materials, processes, and devices. In this journal, the term "surfaces" encompasses all interfaces between solids, liquids, polymers, biomaterials, nanostructures, soft matter, gases, and vacuum. Additionally, the journal includes reviews of experimental techniques and methods used to characterize surfaces and surface processes, such as those based on the interactions of photons, electrons, and ions with surfaces.
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