Controlling the near-field oscillations of loaded plasmonic nanoantennas

Schnell, Martin; García‐Etxarri, Aitzol; Huber, Andreas; Crozier, Kenneth B.; Aizpurua, Javier; Hillenbrand, Rainer

doi:10.1038/nphoton.2009.46

Cited by 446 publications

(420 citation statements)

References 29 publications

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“…For this reason, this longitudinal D mode has recently been termed the charge transfer plasmon mode in the context of close touching metallic nanoparticles. [20][21][22][23] Importantly, Figure 2 (a) demonstrates that, as predicted theoretically, [ 6 , 16 ] the effect of the D mode is to effectively broaden the ACS, leading to greater absorption at lower frequencies. Figure 2 (c) shows that, similarly to the longitudinal D-D mode, this resonance yields a strong ( ∼ 130 fold) fi eld enhancement in the narrow gap separating the two disks, above the contact point.…”

Section: Doi: 101002/adma201202003supporting

confidence: 60%

Broadband Terahertz Plasmonic Response of Touching InSb Disks

et al. 2012

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The plasmonic behavior of dimers of touching semiconductor disks is studied experimentally in the difficult‐to‐realize regime where the disks are only marginally overlapping. Previous theoretical studies have shown that this geometry exhibits a highly efficient broadband response that may be very promising for light harvesting and sensing applications. By taking advantage of the plasmonic character of InSb in the terahertz regime, we experimentally confirm this broadband response and describe the associated strong field enhancement and sub‐micrometer field confinement between the disks.

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Section: Doi: 101002/adma201202003supporting

confidence: 60%

Broadband Terahertz Plasmonic Response of Touching InSb Disks

et al. 2012

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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%

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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“…Pure photonic investigation techniques are potentially more powerful due to the direct investigation of a broad spectral range, the possibility to address the distributions of localized modes in air regions or in metal devices, the absence of polarization constraints and the possibility of phase retrieval when used in combination with heterodyne detection in an external interferometer [21][22][23] . A particularly good example is represented by near-field surface enhanced light scattering performed with apertureless probes, as recently applied to various contexts 22,23 .…”

Section: Introductionmentioning

confidence: 99%

Ultra-subwavelength phase-sensitive Fano-imaging of localized photonic modes

et al. 2015

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Photonic and plasmonic devices rely on nanoscale control of the local density of optical states (LDOS) in dielectric and metallic environments. The tremendous progress in designing and tailoring the electric LDOS of nano-resonators requires an investigation tool that is able to access the detailed features of the optical localized resonant modes with deep-subwavelength spatial resolution. This scenario has motivated the development of different nanoscale imaging techniques. Here, we prove that a technique involving the combination of scanning near-field optical microscopy with resonant scattering spectroscopy enables imaging the electric LDOS in nano-resonators with outstanding spatial resolution (l/19) by means of a pure optical method based on light scattering. Using this technique, we investigate the properties of photonic crystal nanocavities, demonstrating that the resonant modes appear as characteristic Fano line shapes, which arise from interference. Therefore, by monitoring the spatial variation of the Fano line shape, we locally measure the phase modulation of the resonant modes without the need of external heterodyne detection. This novel, deep-subwavelength imaging method allows us to access both the intensity and the phase modulation of localized electric fields. Finally, this technique could be implemented on any type of platform, being particularly appealing for those based on non-optically active material, such as silicon, glass, polymers, or metals.

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Controlling the near-field oscillations of loaded plasmonic nanoantennas

Cited by 446 publications

References 29 publications

Broadband Terahertz Plasmonic Response of Touching InSb Disks

Broadband Terahertz Plasmonic Response of Touching InSb Disks

Plasmons in nanoscale and atomic-scale systems

Ultra-subwavelength phase-sensitive Fano-imaging of localized photonic modes

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