Spiral surface plasmon modes on uniform and tapered metallic nanorods

Chen, Chih Min; Young, Chih Kai; Chen, Kuan Ren; Lan, Yung Chiang

doi:10.1364/josab.30.002529

Cited by 8 publications

(7 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The incident polarization angle can alter the relative amplitude of the HE 1 mode in the x - and y -directions, which further determines the degree of circular polarization of the chiral SPs. Chiral SPs can also be generated from the superposition of the HE 1 mode and HE 2 mode, which yields triple-stranded spiral SPs …”

Section: Propagation and Emission Of Surface Plasmonsmentioning

confidence: 99%

Plasmon Waveguiding in Nanowires

et al. 2018

View full text Add to dashboard Cite

Nanowires supporting propagating surface plasmons can function as nanowaveguides to realize the light guiding with field confinement beyond the diffraction limit, providing fundamental building blocks for nanophotonic integrated circuits. This review covers the recent developments of plasmon waveguiding in nanowires, mainly including plasmon waveguiding in metal nanowires, coupling of nanowire plasmons and emitters, hybrid nanowire waveguides and plasmonic gain, and nanowire photonic devices. We first introduce the main techniques for fabricating metal nanowires, the plasmon modes in metal nanowires and the excitation/detection methods. We then discuss the fundamental properties of plasmon propagation and emission, including zigzag, chiral and spin-dependent propagation, mode conversion, loss and propagation length, group velocity, terminal emission, and leaky radiation. Then the interactions between nanowires and emitters are reviewed, especially the coupling of single nanowires and single quantum emitters. Finally, we briefly introduce the hybrid nanowire waveguide composed of a semiconductor nanowire and a metal film with an intervening thin insulator and highlight a few nanophotonic devices based on plasmonic nanowire networks or plasmonic-photonic hybrid nanowire structures.

show abstract

Section: Propagation and Emission Of Surface Plasmonsmentioning

confidence: 99%

Plasmon Waveguiding in Nanowires

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Three types of structured wire, i.e., corrugated by a single right-handed helix, single left-handed helix, and left-righttwined helix, were studied to investigate the relation between the chirality of SPP and the geometry characteristic. nanowire, whose behaviours mainly depend on the incident polarization orientation [21,22], the characteristic of chiral SPP supported by helically corrugated wire is not only related to the exciting manner but also to the handedness of the helical groove.…”

Section: Helically Grooved Metal Wire Waveguide For Terahertzmentioning

confidence: 99%

“…Effective mode index n is a function of wave number β, implying that the number of azimuthal nodes will evolve from an even value at a small wave number to an odd value as the wave vector increases close to the band edge, β π p . This is different from the case of a bare metal cylinder, whose EM field always appears as even nodes on its azimuthal distribution[22]. For the small wave vector, the SPP mode for n 0 is independent of angular, a type of quasi-symmetrical mode, which we call TM mode (note that we just call it 'TM' by borrowing the concept of modes existing on metal wire waveguides with uniform cross sections.…”

mentioning

confidence: 94%

“…Single metallic nanowire has attracted significant interest because it can be taken as an SPP waveguide, whose merit of nanometre-scale cross sections and capability of supporting SPP propagating a long distance relative to the incident wavelength make it broadly applicable in fields that require sub-wavelengths, such as dot source [17,18] or single molecule sensor [19]. Recently, it was demonstrated theoretically and experimentally that the chiral SPP could be generated on metallic nanowire by properly controlling the incident polarization orientation [20][21][22], which may have a potential prospect as a sub-wavelength source of circular polarized photons.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Frequency-dependent circular-polarization of terahertz chiral spoof surface plasmon polariton on helically grooved metallic wire

Yao

Zhong

2015

Optics Communications

View full text Add to dashboard Cite

Chiral spoof surface plasmon polaritons in the terahertz region, resulting from a coherent superposition of TM and HE modes, can be generated by normally exciting helically corrugated metal wire with a linearly polarized Gaussian light. The handedness of the chiral SPP depends on the handedness of the helical groove. The chirality of the surface wave causes a spiral spatial extent of average power whose period is determined by the difference in the wave vector between two modes. Simultaneously, highly circular polarization of a confined surface wave emerges from the chirality of the geometry. Moreover, the polarization state is heavily dependent on working frequency relative to the characteristic frequency of each mode. This type of chiral SPP, originating from the helical groove, makes helically corrugated metal wire useful for some special applications, such as circularly polarized sources for terahertz near-field microscopy or terahertz sensors for chiral biomolecules

show abstract

“…Besides, lights carrying OAM have been confirmed to have widespread application in nano particle manipulation and detecting realm due to its singularity energy distribution, and can serve as key elements in the areas of optical tweezers [8], super-resolution imaging [9], free-space communication [10] and optical measurement [11]. In the past few years, serials of applications to emit or support the transfer of OAM have been introduced in the form of optical fibers [5,12], nanowires [13][14][15], and whispering gallery resonators [16]. By lifting the energy of degenerated modes, a few-mode optical fiber is proposed to support the propagation of OAM beams with propagation distance larger than 1.1 kilometers [4].…”

Section: Introductionmentioning

confidence: 99%

Transfer of orbital angular momentum through sub-wavelength waveguides

Wang¹,

Ma²,

Pu³

et al. 2015

Opt. Express

View full text Add to dashboard Cite

Data capacity of optical communication is achieving its limit owing to the non-linear effect of optical fiber. As an effective alternative, light carrying orbital angular momentum can greatly increase the capacity for its unprecedented degree of freedom. We demonstrate the propagation of orbital angular momentum with topological charge of 1 and 2 in plasmonic circular waveguide with sub-wavelength diameter with little propagation loss of 2.73 dB/μm, which has never been observed in optical fibers with sub-wavelength diameter. We also confirm that lights carrying orbital angular momentum can be maintained in sharp bended sub-wavelength waveguide. This plasmonic waveguide may serve as a key component in on-chip systems involving OAM.

show abstract

Spiral surface plasmon modes on uniform and tapered metallic nanorods

Cited by 8 publications

References 25 publications

Plasmon Waveguiding in Nanowires

Plasmon Waveguiding in Nanowires

Frequency-dependent circular-polarization of terahertz chiral spoof surface plasmon polariton on helically grooved metallic wire

Transfer of orbital angular momentum through sub-wavelength waveguides

Contact Info

Product

Resources

About