Optical antennas based on coupled nanoholes in thin metal films

Alaverdyan, Yury; Sepúlveda, Borja; Eurenius, Lisa; Olsson, Eva; Käll, Mikael

doi:10.1038/nphys785

Cited by 103 publications

(147 citation statements)

References 34 publications

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“…In these structures, short-range order plays an important role as these structures lack long-range periodicity. We note here that the system under investigation has similarities with an antenna array, as was pointed out by Alaverdyan et al [25]. The holes act as scatters with a well-defined phase difference, given by their distance.…”

Section: Multiple Holesmentioning

confidence: 59%

Local investigation of the optical properties of subwavelength rectangular holes with a focused beam of electrons

Prangsma

Oosten

Kuipers

2011

Phil. Trans. R. Soc. A.

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The optical properties of rectangular subwavelength holes in a gold film are investigated using the light generated when a focused beam of electrons impinges on the sample close to the hole. Using this technique, multi-spectral maps of the holes are obtained with a resolution beyond the optical diffraction limit. The results show the influence of hole shape on the spectrum of locally scattered light. Rectangular holes of varying shape and size are investigated, and the spatial distribution of the polarization of the observed light is measured. The influence of neighbouring holes is investigated by measuring small clusters of holes.

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Section: Multiple Holesmentioning

confidence: 59%

Local investigation of the optical properties of subwavelength rectangular holes with a focused beam of electrons

Prangsma

Oosten

Kuipers

2011

Phil. Trans. R. Soc. A.

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“…Recently it has been shown that each nanohole in a gold film can be substituted by a magnetic dipole in line with the polarization direction of the incident magnetic field [26,27]. Due to the small size of a subwavelength nanohole relative to the wavelength of incident light, the optical properties of a single nanohole can be analyzed based on the quasistatic approximation method [24][25][26]. In addition, the magnetic coupled dipole approximation (MCDA) can be used to study the interaction between two or more nanoholes.…”

Section: Theoretical Methodsmentioning

confidence: 99%

“…An optical antenna can be made of multiple coupled nanoscale metallic elements to achieve a wavelengthdependent optical interaction between the metallic elements [16][17][18]. However, subwavelength devices composed of metallic nanostructures are used to manipulate the optical properties via propagation of surface plasmon polaritons (SPPs) or localized surface plasmon resonances (LSPRs) [18][19][20][21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Directional Radiation of Surface Plasmon Polaritons at Visible Wavelengths through a Nanohole Dimer Optical Antenna Milled in a Gold Film

Janipour

Hodjat-Kashani

2014

Journal of the Optical Society of Korea

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The mechanism of optical interaction of two nanoholes, milled in an opaque gold film, by means of surface plasmon polariton (SPP) propagation is investigated. The interaction depends on the polarization direction of the incident light when the nanohole pair is illuminated through uniform single antenna excitations. It is shown that by illuminating one of the nanoholes, under single antenna excitation, the other nanohole can be excited indirectly via propagated SPPs from the excited nanohole. In addition, it is found that the spectrum of electromagnetic power above the surface of the metallic film at an arbitrary point along the axis of the nanohole pair presents two resonant peaks. These peaks are due to the optical interaction between nanoholes, where the short-and long-wavelength peaks can be assigned to in-phase and antiphase interactions of magnetic dipoles relative to each nanohole, respectively. The magnetic coupled dipole approximation (MCDA) method confirms the simulation results.

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“…We note here that the system under investigation has similarities with an antenna array, as was pointed out by Alaverdyan et al [87]. The holes act as scatters with a well defined phase difference, given by their distance.…”

Section: Resultsmentioning

confidence: 59%

“…In this chapter we try to decompose this complicated problem by looking at only 3 holes. Similar structures have been measured using far-field methods where the entire array is illuminated [87]. In such experiments all the holes are driven in unison.…”

Section: Introductionmentioning

confidence: 62%

Local and dynamic properties of light interacting with subwavelength holes

Prangsma

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Optical antennas based on coupled nanoholes in thin metal films

Cited by 103 publications

References 34 publications

Local investigation of the optical properties of subwavelength rectangular holes with a focused beam of electrons

Local investigation of the optical properties of subwavelength rectangular holes with a focused beam of electrons

Directional Radiation of Surface Plasmon Polaritons at Visible Wavelengths through a Nanohole Dimer Optical Antenna Milled in a Gold Film

Local and dynamic properties of light interacting with subwavelength holes

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