Focusing Surface Plasmons with a Plasmonic Lens

Liu, Zhaowei; Steele, Jennifer M.; Srituravanich, Werayut; Pikus, Yuri; Sun, Cheng; Zhang, Xiang

doi:10.1021/nl051013j

Cited by 540 publications

(371 citation statements)

References 30 publications

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“…The spatially offset probe pulse is temporally delayed by approximately 43.3 fs with respect to the pump pulse, such that it arrives at the gold surface at the same time as the PSP generated by the pump pulse at the trench position. 8 Photoemission from the polarization state prepared by the probe pulse and the PSP wave packet is clearly observable in the upper right region of Figure 5A. This demonstrates that the PSP wave packet propagates at least 150 m from its original launching point, namely the trench coupling structure illustrated in the lower left of Figure 5A, without significant dephasing.…”

Section: Imaging Localized and Propagating Surface Plasmons With Nonlmentioning

confidence: 84%

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Visualizing surface plasmons with photons, photoelectrons, and electrons

El‐Khoury

Abellán

Gong

et al. 2016

Analyst

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Both photons and electrons may be used to excite surface plasmon polaritons, the collective charge density fluctuations at the surface of metal nanostructures. By virtue of their nanoscopic and dissipative nature, a detailed characterization of surface plasmon (SP) eigenmodes in real space-time ultimately requires joint nanometer spatial and femtosecond temporal resolution.The latter realization has driven significant developments in the past few years, aimed at interrogating both localized and propagating SP modes. In this mini-review, we briefly highlight different techniques employed by our own groups to visualize the enhanced electric fields associated with SPs. Specifically, we discuss recent hyperspectral optical microscopy, tipenhanced Raman nano-spectroscopy, nonlinear photoemission electron microscopy, as well as correlated scanning transmission electron microscopy-electron energy loss spectroscopy measurements targeting prototypical plasmonic nanostructures and constructs. Through selected practical examples from our own laboratories, we examine the information content in multidimensional images recorded by taking advantage of each of the aforementioned techniques. In effect, we illustrate how SPs can be visualized at the ultimate limits of space and time.

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Section: Imaging Localized and Propagating Surface Plasmons With Nonlmentioning

confidence: 84%

“…Subsequently, PSPs can be manipulated over subwavelength length scales, 8 and even (coherently) transported to distances hundreds of microns away from their initial coupling sites. 9 Nanometric variations in the structures of SP-supporting constructs may completely alter their overall plasmonic properties.…”

Section: Brief Overviewmentioning

confidence: 99%

Visualizing surface plasmons with photons, photoelectrons, and electrons

El‐Khoury

Abellán

Gong

et al. 2016

Analyst

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“…2,3 Taking advantage of the intrinsic two-dimensional (2D) nature of SPPs, which provides many opportunities for miniaturizing current optical devices to micro-and nano-size, various elements for the 2D SPP optics 4 analogous to the conventional 3D counterparts have been developed, such as lenses, [5][6][7][8][9][10] waveguides, 11,12 interferometers, 13,14 and microscopy. 15 By combining those plasmonic devices together, it may be possible to develop integrated plasmonic circuit and provide next-generation information network with improved bandwidth and speed.…”

mentioning

confidence: 99%

Plasmonic Demultiplexer and Guiding

Zhao

Zhang

2010

ACS Nano

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“…Wide interest in plasmonic lenses has started a decade ago, when transverse resolution considerably better than the Abbe resolution limit was predicted [5] and experimentally proven [6,7]. A lot of research was devoted to generation of surface plasmonpolariton (SPP) waves on circular and elliptical gratings milled in thin Ag layers and to focusing of plasmons on lens surfaces [8][9][10]. At the same time, ways of fabricating extremely smooth patterned metal layers for plasmonics were sought [11].…”

Section: Introductionmentioning

confidence: 99%

Single-layer metal nanolenses with tight foci in far-field

et al. 2011

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In simulations we analyze performance of plasmonic nanolenses made of a single metal layer. We consider the nanolenses in two configurations. In the first, the nanolens is a free-standing silver layer with no hole on the optical axis and double-sided concentric corrugations. In the second, the nanolens has a set of slits instead of grooves. This necessitates integrating the annular metal elements with a dielectric matrix. We examine the following parameters of the nanolenses: film thickness, diameter of an on-axis stop, and lattice constant of slits or double-sided concentric grooves, as well as depth and width of grooves. Due to radially polarized illumination lenses have foci of full widths at half maxima (FWHMs) better than half a wavelength, though foci formed by propagating waves do not decrease beyond the diffraction limit. Due to proper geometry of slits or double-sided grooves lenses have focal lengths of the order of a few wavelengths. Transmission of light through lenses with double-sided narrow grooves reaches 30% while through ones with slits exceeds 80%.

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Focusing Surface Plasmons with a Plasmonic Lens

Cited by 540 publications

References 30 publications

Visualizing surface plasmons with photons, photoelectrons, and electrons

Visualizing surface plasmons with photons, photoelectrons, and electrons

Plasmonic Demultiplexer and Guiding

Single-layer metal nanolenses with tight foci in far-field

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