Publisher’s Note: “Optical antennas: Resonators for local field enhancement” [J. Appl. Phys. <b>94</b>, 4632 (2003)]

Crozier, Kenneth B.; Sundaramurthy, Arvind; Kino, G. S.; Quate, C. F.

doi:10.1063/1.1626674

Cited by 79 publications

(114 citation statements)

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“…For the case of spheroids with aspect ratiosϾ 10: 1, the overall particle resonance can be interpreted as an antenna effect, where the field is further enhanced at the tip due to lightning rod and local plasmon resonances. 13,52 Fully analytical 53 and a variety of numerical models 54 have been used to quantify the field enhancement at sharp points on a variety of single-metal particles, predicting highest-field enhancement factors of about 100 for Ag particles.…”

Section: Local Field Enhancement Around Metal Nanoparticle Structumentioning

confidence: 99%

Plasmonics: Localization and guiding of electromagnetic energy in metal/dielectric structures

Maier

Atwater

2005

Journal of Applied Physics

1,800

1,217

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We review the basic physics of surface-plasmon excitations occurring at metal/dielectric interfaces with special emphasis on the possibility of using such excitations for the localization of electromagnetic energy in one, two, and three dimensions, in a context of applications in sensing and waveguiding for functional photonic devices. Localized plasmon resonances occurring in metallic nanoparticles are discussed both for single particles and particle ensembles, focusing on the generation of confined light fields enabling enhancement of Raman-scattering and nonlinear processes. We then survey the basic properties of interface plasmons propagating along flat boundaries of thin metallic films, with applications for waveguiding along patterned films, stripes, and nanowires. Interactions between plasmonic structures and optically active media are also discussed.

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Section: Local Field Enhancement Around Metal Nanoparticle Structumentioning

confidence: 99%

Plasmonics: Localization and guiding of electromagnetic energy in metal/dielectric structures

Maier

Atwater

2005

Journal of Applied Physics

1,800

1,217

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“…[1][2][3][4] Since metals no longer possess high conductivity in the optical domain, but rather they are described as materials whose relative permittivities show negative real parts ͑plasmonic materials͒, their interaction with electromagnetic wave at optical frequencies is significantly different from that in microwave and radio frequency ͑RF͒ domains. Therefore, the conventional antenna design techniques maturely developed at microwave or RF frequencies need to be revised properly for optical wavelengths, which makes the design of optical antenna a challenging task.…”

Section: Introductionmentioning

confidence: 99%

Optical spectrometer at the nanoscale using optical Yagi-Uda nanoantennas

Salandrino

Engheta

2009

Phys. Rev. B

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Here we present and analyze an optical spectrum analyzer at the nanometer scale that is able to distribute different frequency contents of the radiation of an optical dipole source into different directions in the space. The spectrum analyzer is composed of arrays of optical Yagi-Uda nanoantennas, forming relatively narrow radiation patterns operating at different frequencies. The optical Yagi-Uda nanoantennas composed of plasmonic core-shell nanoparticles are used as an example of building blocks for this idea in our study. Narrow radiation beams in such antenna arrays are realized by tailoring the scattering phase of the nanoparticles. The sensitivity of such an antenna array to the operating wavelength and the angular distribution of the radiation pattern, which is essential for the operation of the spectrum analyzer proposed here, is studied theoretically. The chromatic dispersion and the angular variation of the radiation pattern of such an optical spectrum analyzer are discussed in detail. Optical spectrometer at the nanoscale using optical Yagi-Uda nanoantennas Jingjing Li, Alessandro Salandrino, and Nader Engheta, Phys. Rev. B 79, 195104 (2009) Here we present and analyze an optical spectrum analyzer at the nanometer scale that is able to distribute different frequency contents of the radiation of an optical dipole source into different directions in the space. The spectrum analyzer is composed of arrays of optical Yagi-Uda nanoantennas, forming relatively narrow radiation patterns operating at different frequencies. The optical Yagi-Uda nanoantennas composed of plasmonic core-shell nanoparticles are used as an example of building blocks for this idea in our study. Narrow radiation beams in such antenna arrays are realized by tailoring the scattering phase of the nanoparticles. The sensitivity of such an antenna array to the operating wavelength and the angular distribution of the radiation pattern, which is essential for the operation of the spectrum analyzer proposed here, is studied theoretically. The chromatic dispersion and the angular variation of the radiation pattern of such an optical spectrum analyzer are discussed in detail.

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“…The tight confinement of the electromagnetic field to the metal-dielectric interface due to the boundary condition constraints gives the possibility of inventing new ways to enhance light-matter interaction, such as efficient single optical plasmon generation, 10,11 single molecule detection with surface-enhanced Raman scattering, 12,13 enhanced photoluminescence from quantum wells, 14 and nanoantenna modified spontaneous emission. [15][16][17] Although limited by the intrinsic losses of the metals in the optical frequency range, different metallic structures have been extensively studied in the last few years due to the possibilities of integration and miniaturization. The dramatic enhancement of the field intensity due to the field concentration and geometric slowing down of the mode propagation provides an excellent platform to study single-photon nonlinear optics 18 and light-matter interaction at the single-emittersingle-photon level.…”

Section: Introductionmentioning

confidence: 99%

Finite-element modeling of spontaneous emission of a quantum emitter at nanoscale proximity to plasmonic waveguides

et al. 2010

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We develop a self-consistent finite element method to study spontaneous emission at nanoscale proximity of plasmonic waveguides. In the model, it is assumed that only one guided mode is dominatingly excited by the quantum emitter. With such one dominating mode assumption, the cross section of the plasmonic waveguide can be arbitrary. We apply our numerical method to calculate the coupling of a quantum emitter to a cylindrical nanowire and a rectangular waveguide, and compare the cylindrical nanowire to previous work valid in quasistatic approximation. The fraction of the energy coupled to the plasmonic mode can be calculated exactly, which can be used to determine the single optical plasmon generation efficiency for a quantum emitter. For a gold nanowire we observe agreement with the quasistatic approximation for radii below 20 nm, but for larger radii the total decay rate is up to 10 times larger. For the rectangular waveguide we estimate an optimized value for the spontaneous emission factor β of up to 80%.

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Publisher’s Note: “Optical antennas: Resonators for local field enhancement” [J. Appl. Phys. 94, 4632 (2003)]

Cited by 79 publications

References 0 publications

Plasmonics: Localization and guiding of electromagnetic energy in metal/dielectric structures

Plasmonics: Localization and guiding of electromagnetic energy in metal/dielectric structures

Optical spectrometer at the nanoscale using optical Yagi-Uda nanoantennas

Finite-element modeling of spontaneous emission of a quantum emitter at nanoscale proximity to plasmonic waveguides

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