Optical antennas: Resonators for local field enhancement

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

doi:10.1063/1.1602956

Cited by 426 publications

(283 citation statements)

References 17 publications

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“…It is known that a simple nanorod with a micrometer to nanometer length provides very strong antenna resonance in the IR region by forming a standing-wave localized surface plasmon [12,[58][59][60][61]. In the following, we briefly overview some examples of nanorod antenna resonance and its applications.…”

Section: Optical Applications Of Localized Surface Plasmon: Propertiementioning

confidence: 99%

“…On the contrary, for elongated particles (disks, rods, etc), the localized plasmon resonance splits into two modes and the lower mode undergoes a redshift with increasing aspect ratio of the object. With appropriate geometrical parameters, it is possible to redshift the resonance frequency even into the IR region while the higher-frequency mode remains in the visible wavelength range [8,58,59]. The former has polarization parallel to the long axis of the particle and is called longitudinal localized surface plasmon (longitudinal mode), whereas the latter has polarization perpendicular to the long axis and is called transverse localized surface plasmon (transversal mode).…”

Section: Optical Applications Of Localized Surface Plasmon: Propertiementioning

confidence: 99%

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Plasmons in nanoscale and atomic-scale systems

Nagao

Han

Hoang

et al. 2010

Science and Technology of Advanced Materials

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Plasmons in metallic nanomaterials exhibit very strong size and shape effects, and thus have recently gained considerable attention in nanotechnology, information technology, and life science. In this review, we overview the fundamental properties of plasmons in materials with various dimensionalities and discuss the optical functional properties of localized plasmon polaritons in nanometer-scale to atomic-scale objects. First, the pioneering works on plasmons by electron energy loss spectroscopy are briefly surveyed. Then, we discuss the effects of atomistic charge dynamics on the dispersion relation of propagating plasmon modes, such as those for planar crystal surface, atomic sheets and straight atomic wires. Finally, standing-wave plasmons, or antenna resonances of plasmon polariton, of some widely used nanometer-scale structures and atomic-scale wires (the smallest possible plasmonic building blocks) are exemplified along with their applications.

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Section: Optical Applications Of Localized Surface Plasmon: Propertiementioning

confidence: 99%

Section: Optical Applications Of Localized Surface Plasmon: Propertiementioning

confidence: 99%

Plasmons in nanoscale and atomic-scale systems

Nagao

Han

Hoang

et al. 2010

Science and Technology of Advanced Materials

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“…optical antennas, interacting with the electromagnetic field. The resonant collective excitation of the free electron gas is responsible for unusual and interesting electromagnetic properties such as subwavelength plasmon resonances [26], super-continuum generation due to strong field enhancement [27,28], negative permeability [29] and diffraction from ordered sub-wavelength apertures in metallic surfaces [30,31]. A deeper understanding of the physical processes at this length-scale is the first step toward the development of devices in which the sub-wavelength optics is coupled to the nano-mechanics and thermodynamics.…”

Section: Perspectives and Conclusionmentioning

confidence: 99%

Thermomechanical behavior of surface acoustic waves in ordered arrays of nanodisks studied by near-infrared pump-probe diffraction experiments

et al. 2007

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The ultrafast thermal and mechanical dynamics of a two-dimensional lattice of metallic nanodisks has been studied by near infrared pump-probe diffraction measurements, over a temporal range spanning from 100 fs to several nanoseconds. The experiments demonstrate that, in these systems, a two-dimensional surface acoustic wave (2DSAW), with a wavevector given by the reciprocal periodicity of the array, can be excited by ∼120 fs Ti:sapphire laser pulses. In order to clarify the interaction between the nanodisks and the substrate, numerical calculations of the elastic eigenmodes and simulations of the thermodynamics of the system are developed through finite-element analysis. At this light, we unambiguously show that the observed 2DSAW velocity shift originates from the mechanical interaction between the 2DSAWs and the nano-disks, while the correlated 2DSAW damping is due to the energy radiation into the substrate.

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“…(3) or modeled by full field simulations. The resonance behaviour displays a feature that corresponds to the induced dynamic charge density oscillating parallel to the exciting field polarization [53,54]. In this regime, the gap only has a small influence on the position of the resonance.…”

Section: The Bow-tie Antennamentioning

confidence: 99%

Limitations of Extreme Nonlinear Ultrafast Nanophotonics

2015

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High-harmonic generation (HHG) has been established as an indispensable tool in optical spectroscopy. This effect arises for instance upon illumination of a noble gas with sub-picosecond laser pulses at focussed intensities significantly greater than 10 12 W/cm 2 . HHG provides a coherent light source in the extreme ultraviolet (XUV) spectral region, which is of importance in inner shell photo ionization of many atoms and molecules. Additionally, it intrinsically features light fields with unique temporal properties. Even in its simplest realization, XUV bursts of sub-femtosecond pulse lengths are released. More sophisticated schemes open the path to attosecond physics by offering single pulses of less than 100 attoseconds duration.Resonant optical antennas are important tools for coupling and enhancing electromagnetic fields on scales below their free-space wavelength. In a special application, placing field-enhancing plasmonic nano antennas at the interaction site of an HHG experiment has been claimed to boost local laser field strengths, from insufficient initial intensities to sufficient values. This was achieved with the use of arrays of bow-tie-shaped antennas of ∼ 100 nm in length. However, the feasibility of this concept depends on the vulnerability of these nano-antennas to the still intense driving laser light. We show, by looking at a set of exemplary metallic structures, that the threshold fluence F th of laser-induced damage (LID) is a greatly limiting factor for the proposed and tested schemes along these lines. We present our findings in the context of work done by other groups, giving an assessment of the feasibility and effectiveness of the proposed scheme.

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Optical antennas: Resonators for local field enhancement

Cited by 426 publications

References 17 publications

Plasmons in nanoscale and atomic-scale systems

Plasmons in nanoscale and atomic-scale systems

Thermomechanical behavior of surface acoustic waves in ordered arrays of nanodisks studied by near-infrared pump-probe diffraction experiments

Limitations of Extreme Nonlinear Ultrafast Nanophotonics

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