Polarization conversion with elliptical patch nanoantennas

Wang, Rui; Chakrabarty, Ayan; Minkowski, Fred; Sun, Kai; Wei, Qi‐Huo

doi:10.1063/1.4731792

Cited by 59 publications

(37 citation statements)

References 25 publications

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“…0 and Se m (η, q) with m ! 1 are two independent classes of even (e) and odd (o) Mathieu functions of the first kind [148], and ξ is defined by the geometry of the nanocavity. Therefore, the electric component of the incident and reflected waves can be projected inside the nanocavity in two parallel directions, on the major axis of the nanocavity.…”

Section: Polarization Controlmentioning

confidence: 99%

Plasmonic Nanostructure Arrays Coupled with a Quantum Emitter

Rivera¹,

Silva²,

Ledemi

et al. 2014

SpringerBriefs in Physics

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In the previous chapter, we saw that a metal nanoparticle (NP) can generate localized surface plasmon resonance (LSPR), as a result of the resonance of free electrons on a curved surface. We also mentioned the main difference between surface plasmon polaritons (SPP) and LSPR, namely that SPPs are propagating waves, while LSPR is a nonpropagating excitation of free electrons in a metallic nanostructure coupled to an EM field. In this chapter, we will see that SPPs in restricted geometries (such as nanoantennas or nanocavities) can also generate LSPR. Nevertheless, the conditions for excitation are different. LSPR can be excited by direct application of light, whereas SPPs can be excited by matching the frequency and momentum of the excitation light and the SPPs. For example, under laser illumination, an antenna develops a strong dipole along the antenna. Charge oscillations inside each arm give rise to strong EM fields inside the feedgap of the antenna. When the antenna is resonant at optical frequencies, it can be called a resonant nanoantenna. In this case, with sufficiently close spacing with respect to a quantum emitter (QE) and nanoantenna, they can interact forming an electric dipole.On the other hand, the extremely high localized fields in plasmonic nanocavities or plasmonic resonators, although they generally have low quality factors Q, are able to confine modes to sub-wavelength volumes V. Thus, plasmonic nanocavities become much more competitive with conventional optical resonators for applications where a resonance confined to a small volume is desirable. Hence, a nanocavity can profoundly change the number of EM modes and decay pathways available to a QE, increasing or decreasing its radiative decay rate. In both cases (nanoantenna and nanocavity), we can manipulate the local density of optical states (LDOS) of the QE, and increase the efficiency of light emission from the QEs.

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Section: Polarization Controlmentioning

confidence: 99%

Plasmonic Nanostructure Arrays Coupled with a Quantum Emitter

Rivera¹,

Silva²,

Ledemi

et al. 2014

SpringerBriefs in Physics

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show abstract

“…Furthermore, such plasmonic antennas can be used to convert polarization states from linear to circular [195] or to distinguish between left and right circularly polarized light [168]. In this regard, a self-consistent electromagnetic theory of the coupling between dipole emitters and dissipative nanoresonators has been developed [63].…”

Section: Optical Antennasmentioning

confidence: 99%

Plasmonic circuits for manipulating optical information

2016

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Surface plasmons excited by light in metal structures provide a means for manipulating optical energy at the nanoscale. Plasmons are associated with the collective oscillations of conduction electrons in metals and play a role intermediate between photonics and electronics. As such, plasmonic devices have been created that mimic photonic waveguides as well as electrical circuits operating at optical frequencies. We review the plasmon technologies and circuits proposed, modeled, and demonstrated over the past decade that have potential applications in optical computing and optical information processing.

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“…[11][12][13] Advances in nanofabrication techniques have enabled high precision engineering of a myriad type of antennas, including Hertzian dipole, bowtie, Yagi-Uda, and patch nanoantennas. [14][15][16][17] The patch nanoantennas, which are composed of metallic disks on top of a metallic film with a dielectric layer, exhibit unique properties, such as near-perfect absorption, [18][19][20][21] high refractive index sensing, 18 ultra-small mode volumes, 22 polarization conversion, 17,23,24 and beam focusing. 25 Patches with different geometric shapes, such as circular, 26,27 elliptical, 16,20 squares, 28 and crosses, 23,24 have been studied.…”

mentioning

confidence: 99%

Resonant cavity modes of circular plasmonic patch nanoantennas

Minkowski

Wang

Chakrabarty

et al. 2014

Applied Physics Letters

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Production of multicharged ions and behavior of microwave modes in an electron cyclotron resonance ion source directly excited in a circular cavity resonator Rev. Sci. Instrum. 77, 03A336 (2006); 10.1063/1.2163330 All-metamaterial-based subwavelength cavities ( λ ∕ 60 ) for ultrathin directive antennas Appl. Phys. Lett. 88, 084103 (2006); 10.1063/1.2172740Resonantly coupled surface plasmon polaritons in the grooves of very deep highly blazed zero-order metallic gratings at microwave frequencies

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Polarization conversion with elliptical patch nanoantennas

Cited by 59 publications

References 25 publications

Plasmonic Nanostructure Arrays Coupled with a Quantum Emitter

Plasmonic Nanostructure Arrays Coupled with a Quantum Emitter

Plasmonic circuits for manipulating optical information

Resonant cavity modes of circular plasmonic patch nanoantennas

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