Collimated Plasmon Beam: Nondiffracting versus Linearly Focused

Li, L.; Li, T.; Wang, S. M.; Zhu, Shining

doi:10.1103/physrevlett.110.046807

Cited by 89 publications

(64 citation statements)

References 27 publications

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“…Generally speaking, the issue of absorption in optics is usually only dealt with via external means (for example, amplifiers or appropriate sample design), and presently there are no generic optical beams that can maintain the peak intensity value and the structure of their main lobe in lossy media. Several avenues to overcome this limitation have been demonstrated [27][28][29][30] , but none targeted shape-preserving accelerating beams.…”

mentioning

confidence: 99%

Loss-proof self-accelerating beams and their use in non-paraxial manipulation of particles’ trajectories

et al. 2014

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Self-accelerating beams-shape-preserving bending beams-are attracting great interest, offering applications in many areas such as particle micromanipulation, microscopy, induction of plasma channels, surface plasmons, laser machining, nonlinear frequency conversion and electron beams. Most of these applications involve light-matter interactions, hence their propagation range is limited by absorption. We propose loss-proof accelerating beams that overcome linear and nonlinear losses. These beams, as analytic solutions of Maxwell's equations with losses, propagate in absorbing media while maintaining their peak intensity. While the power such beams carry decays during propagation, the peak intensity and the structure of their main lobe region are maintained over large distances. We use these beams for manipulation of particles in fluids, steering the particles to steeper angles than ever demonstrated. Such beams offer many additional applications, such as loss-proof selfbending plasmons. In transparent media these beams show exponential intensity growth, which facilitates other novel applications in micromanipulation and ignition of nonlinear processes.

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mentioning

confidence: 99%

Loss-proof self-accelerating beams and their use in non-paraxial manipulation of particles’ trajectories

et al. 2014

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“…Meanwhile, the planar metallic film supporting the SPP is extremely sensitive to its surrounding dielectrics; this property is widely utilized in biological sensors [6]. With the rapid advances of nanofabrication techniques and microscopic spectrophotometers over the past decades [7][8][9], proposed uses have been extended to include many new applications, particularly plasmonic rulers [10], surface-enhanced spectroscopy [11,12], optical waveguides [13], nanolasers [14], and optical modulators [15]. Nowadays, the ability to manipulate and characterize light at the nanometer scale permits the fabrication of subwavelength optical devices.…”

Section: Overview Of Plasmonicsmentioning

confidence: 99%

Survey of plasmonic gaps tuned at sub-nanometer scale in self-assembled arrays

Qian

Wang

et al. 2016

Front. Phys.

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Creating nanoscale and sub-nanometer gaps between noble metal nanoparticles is critical for the applications of plasmonics and nanophotonics. To realize simultaneous attainments of both the optical spectrum and the gap size, the ability to tune these nanoscale gaps at the sub-nanometer scale is particularly desirable. Many nanofabrication methodologies, including electron beam lithography, self-assembly, and focused ion beams, have been tested for creating nanoscale gaps that can deliver significant field enhancement. Here, we survey recent progress in both the reliable creation of nanoscale gaps in nanoparticle arrays using self-assemblies and in the in-situ tuning techniques at the sub-nanometer scale. Precisely tunable gaps, as we expect, will be good candidates for future investigations of surface-enhanced Raman scattering, non-linear optics, and quantum plasmonics. Overview of plasmonicsLight-metal interactions were well exploited in a number of ancient artworks that are now on display around the world. One of the most common examples is the colorful window glass found in many ancient European churches, where the colors actually are a result of the scattering of metallic nanoparticles (NPs) [1]. Another even more famous example is the Lycurgus cup, which shows a strikingly red color when viewed in transmitted light, but turns green in reflected light, as shown in Fig. 1 section of scattering as illustrated in Fig. 1 counterparts [16,17]. Therefore, plasmonics holds great promise for penetration into chemical and biological sensors at tiny volumes, even more so than optoelectronic nanodevices were initially anticipated to accomplish [18,19]. Plasmonic gaps created by self-assemblyDue to strong near-field coupling, the intense electromagnetic field within the plasmonic gaps stimulates continuous development in several disciplines. The first method involves random aggregations triggered by some extraneous chemicals, including molecules, DNA, and ions, which can interrupt the surface charging onto metal NPs. When the suitable molecules or ions are added to the metallic colloids, a color change is visible to the naked eye [34][35][36][37]. Partial aggregations of gold colloids give rise to some plasmonic gaps, inducing the output of the SERS with extraordinarily large enhancements [38,39]. When plasmonic NPs are assembled at the two immiscible phases and even aggregated into volume colloids [40], the spatial distribution of the NPs can be tailored by changing their chemical environments [41,42]. A stepwise strategy to generate regular heterogeneous binary NP arrays has also been reported in the literature [43]. Nowadays, based on this principle of random aggregation, gold colloids have become commercially available in products used as biological detectors, such as oviposit and pregnancy test strips.In the second method, similar to the formation of a "coffee ring", a two-dimensional NP array can be achieved by self-assembly on a liquid/air interface [44]. The NP within the colloid will flow towards the contact ...

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“…We refer readers to a latest review paper for more insights on the plasmonic airy beams [90]. A nonperfectly matched Bragg diffraction method was also developed for diffraction-free SPP beams [91].…”

Section: D Spp In-plane Manipulationmentioning

confidence: 99%

Light manipulation with encoded plasmonic nanostructures

2014

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-Plasmonics, which allows for manipulation of light field beyond the fundamental diffraction limit, has recently attracted tremendous research efforts. The propagating surface plasmon polaritons (SPPs) confined on a metal-dielectric interface provide an ideal two-dimensional (2D) platform to develop subwavelength optical circuits for on-chip information processing and communication. The surface plasmon resonance of rationally designed metallic nanostructures, on the other hand, enables pronounced phase and polarization modulation for light beams travelling in three-dimensional (3D) free space. Flexible 2D and free-space propagating light manipulation can be achieved by encoding plasmonic nanostructures on a 2D surface, promising the design, fabrication and integration of the nextgeneration optical architectures with substantially reduced footprint. It is envisioned that the encoded plasmonic nanostructures can significantly expand available toolboxes for novel light manipulation. In this review, we presents the fundamentals, recent developments and future perspectives in this emerging field, aiming to open up new avenues to developing revolutionary photonic devices.

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Collimated Plasmon Beam: Nondiffracting versus Linearly Focused

Cited by 89 publications

References 27 publications

Loss-proof self-accelerating beams and their use in non-paraxial manipulation of particles’ trajectories

Loss-proof self-accelerating beams and their use in non-paraxial manipulation of particles’ trajectories

Survey of plasmonic gaps tuned at sub-nanometer scale in self-assembled arrays

Light manipulation with encoded plasmonic nanostructures

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