Midinfrared thermal emission properties of finite arrays of gold dipole nanoantennas

Centini, Marco; Benedetti, Alessio; Larciprete, M. C.; Belardini, A.; Voti, R. Li; Bertolotti, M.; Sibilia, C.

doi:10.1103/physrevb.92.205411

Cited by 21 publications

(12 citation statements)

References 35 publications

(39 reference statements)

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“…Eqs. (31) and (32) show that for arbitrary classical fields ρ N T LS with arbitrary number of TLS we find again the isomorphism between G (m) N T LS (r 1 , . .…”

Section: Dicke Like States For Classical Sourcesmentioning

confidence: 53%

Simulating Dicke-like superradiance with classical light sources

et al. 2016

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In this paper we investigate the close relationship between Dicke superradiance, originally predicted for an ensemble of two-level atoms in entangled states, and the Hanbury Brown and Twiss effect, initially established in astronomy to determine the dimensions of classical light sources like stars. By studying the state evolution of the fields produced by classical sources -defined by a positive Glauber-Sudarshan P function -when recording intensity correlations of higher order in a generalized Hanbury Brown and Twiss setup we find that the angular distribution of the last detected photon, apart from an offset, is identical to the superradiant emission pattern generated by an ensemble of two-level atoms in entangled symmetric Dicke states. We show that the phenomenon derives from projective measurements induced by the measurement of photons in the far field of the sources and the permutative superposition of quantum paths identical to those leading to superradiance in the case of single photon emitters. We thus point out an important similarity between classical sources and quantum emitters upon detection of photons if the particular photon source remains unknown. We finally present a compact result for the characteristic functional which generates intensity correlations of arbitrary order for any kind of light sources.

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“…Eqs. (31) and (32) show that for arbitrary classical fields ρ N T LS with arbitrary number of TLS we find again the isomorphism between G (m) N T LS (r 1 , . .…”

Section: Dicke Like States For Classical Sourcesmentioning

confidence: 53%

Simulating Dicke-like superradiance with classical light sources

et al. 2016

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“…This heat loss channel is influenced by spectral resonances, as experimentally verified, similar to those present in absorption or scattering spectra [8]. A super-Planckian emission behavior is also theoretically speculated to occur for an individual NP at the resonance wavelength [9].…”

Section: Introductionmentioning

confidence: 75%

Temperature of a nanoparticle above a substrate under radiative heating and cooling

Kallel¹,

Carminati²,

Joulain³

2017

Phys. Rev. B

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Controlling the temperature in architectures involving nanoparticles and substrates is a key issue for applications involving micro and nanoscale heat transfer. We study the thermal behavior of a single nanoparticle interacting with a flat substrate under external monochromatic illumination, and with thermal radiation as the unique heat loss channel. We develop a model to compute the temperature of the nanoparticle, based on an effective dipole-polarizability approach. Using numerical simulations, we thoroughly investigate the impacts of various parameters affecting the nanoparticle temperature, such as the nanoparticle-to-substrate gap distance, the incident light wavelength and polarization, or the material resonances. This study provides a tool for the thermal characterization and design of micro or nanoscale systems coupling substrates with nanoparticles or optical antennas.

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“…The emitted power spectral density is evaluated by applying a previously developed model based on the fluctuational electrodynamics approach and on the discretization of the resulting volume integral equation to calculate emissivity and far field spatial emission pattern of nanoparticle ensembles [35]. More in details, the numerical model is based on the fluctuation dissipation theorem [36]: for a medium with relative permittivity ε r at a given temperature T the cross correlation spectral density for the chaotic current density related to thermal fluctuations is given by the expression:…”

Section: Methodsmentioning

confidence: 99%

Hybrid thermal Yagi-Uda nanoantennas for directional and narrow band long-wavelength IR radiation sources

Centini¹,

Larciprete²,

Voti³

et al. 2020

Opt. Express

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We investigate the possibility of spatially and spectrally controlling the thermal infrared emission by exploitation of the Yagi-Uda antenna design. Hybrid antennas composed of both SiC and Au rods are considered and the contributions of emission from all the elements, at a given equilibrium temperature, are taken into account. We show that the detrimental effect due to thermal emission from the not ideal parasitic elements drastically affect the performances of conventional thermal Au antennas in the 12 µm wavelength range. Nevertheless, our results show that the hybrid approach allows the development of efficient narrow-band and high directivity sources. The possibility of exploiting the Yagi-Uda design both in transmission and in reception modes, may open the way to the realization of miniaturized, efficient, robust and cheap sensor devices for mass-market applications.

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Midinfrared thermal emission properties of finite arrays of gold dipole nanoantennas

Cited by 21 publications

References 35 publications

Simulating Dicke-like superradiance with classical light sources

Simulating Dicke-like superradiance with classical light sources

Temperature of a nanoparticle above a substrate under radiative heating and cooling

Hybrid thermal Yagi-Uda nanoantennas for directional and narrow band long-wavelength IR radiation sources

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