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The transmission probability and phase through a few-electron quantum dot are studied within a resonance theory for the strong coupling regime to the conducting leads. We find that the interaction between overlapping resonances leads to…

Mesoscale and Nanoscale Physics · Physics 2011-05-09 E. R. Racec

We present a microscopic model describing the transition to strong coupling regime for an emitter resonantly coupled to a surface plasmon in a metal-dielectric structure. We demonstrate that the shape of scattering spectra is determined by…

Mesoscale and Nanoscale Physics · Physics 2022-07-08 Tigran V. Shahbazyan

An optical Fano resonance, which is caused by birefringence control rather than frequency selection, is discovered. Such birefringence-induced Fano resonance comes with fast-switching radiation. The resonance condition $\varepsilon_t<…

Mechanism of the Fano resonances in planar metamaterials demonstrate based on the coupled two-oscillator model. We have described the optical spectrums like reflectance and transmittance near the resonances of bright mode (continuum mode)…

Optics · Physics 2016-05-04 Song-Kum Song , Song-Jin Im

The scattering amplitude from a set of discrete states coupled to a continuum became known as the Fano profile, characteristic for its asymmetric lineshape and originally investigated in the context of photoionization. The generality of the…

The concepts of many optical devices are based on the fundamental physical phenomena such as resonances. One of the commonly used devices is an electromagnetic antenna that converts localized energy into freely propagating radiation and…

The resonance effects on the optical second harmonic generation from 140 nm silver nanoparticles is studied experimentally by hyper-Rayleigh scattering and numerically by finite element method calculations. We find that the interferences…

Time-resolved spontaneous Raman spectroscopy serves as a probe for incoherent quasiparticle and collective excitation dynamics, and allows to distinguish symmetry changes across a photoinduced phase transition through the inelastic light…

Materials Science · Physics 2019-03-27 J. Zhu , R. B. Versteeg , P. Padmanabhan , P. H. M. van Loosdrecht

We study the scattering of infrared light by small dielectric core-shell particles taking a sapphire sphere with a CaO core as an example. The extinction efficiency of such a particle shows two intense series of resonances attached,…

Mesoscale and Nanoscale Physics · Physics 2015-05-20 E. Thiessen , F. X. Bronold , R. L. Heinisch , H. Fehske

Optical spectra of semiconductor quantum wells driven by an off-resonant oscillating field are studied theoretically. Due to the dynamical stabilization effect, the field induces the quasi-stationary electron states confined at repulsive…

Mesoscale and Nanoscale Physics · Physics 2020-12-23 O. V. Kibis , S. A. Kolodny , I. V. Iorsh

The behavior of Fano resonance and the reversal of near field optical binding force of dimers over different substrates have not been studied so far. In this work, we observe that if the closely located plasmonic cube homodimers over glass…

Optics · Physics 2017-04-20 M. R. C. Mahdy , Tianhang Zhang , Md. Danesh , Weiqiang Ding

We introduce a quasinormal mode theory of mechanical open-cavity modes for optomechanical resonators, and demonstrate the importance of using a generalized (complex) effective mode volume and the phase of the quasinormal mode. We first…

Optics · Physics 2020-12-16 Al-Waleed El-Sayed , Stephen Hughes

We present an electrically driven plasmonic device consisting of a gold nanoparticle trapped in a gap between two electrodes. The tunneling current in the device generates plasmons, which decay radiatively. The emitted spectrum extends up…

Mesoscale and Nanoscale Physics · Physics 2016-01-21 Yuval Vardi , Eyal Cohen-Hoshen , Guy Shalem , Israel Bar-Joseph

The effect of asymmetric functionally graded material on the edge resonance and the Fano resonance in semi-infinite FGM plates are reported in this work. The edge resonance is weakened by the material perturbation and the complete mode…

Classical Physics · Physics 2021-06-02 Shengyu Tang , Wenping Bi , Jingwei Yin , Vincent Pagneux

Fano resonance exhibiting an asymmetric spectral line shape is a universal phenomenon observed in diverse physical systems. Here we experimentally establish a direct link between the spectral asymmetry parameter and a physically realizable…

Harnessing quantum interference among bosons provides significant opportunities as bosons often carry longer coherence time than fermions. As an example of quantum interference, Fano resonance involving phonons or photons describes the…

In the presence of direct trajectories connecting source and drain contacts, the conductance of a quantum dot may exhibit resonances of the Fano type. Since Fano resonances result from the interference of two transmission pathways, their…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 A. A. Clerk , X. Waintal , P. W. Brouwer

Three different periodic optical metasurfaces exhibiting Fano resonances are studied in mid-IR frequency range in the presence of a substrate. We develop a rigorous semi-analytical technique and calculate how the presence of a substrate…

Optics · Physics 2012-04-16 S. Hossein Mousavi , Alexander B. Khanikaev , Gennady Shvets

The complete picture of the optical properties of resonant structures, along with the frequency, quality factor, and line shape in the scattering spectra, is determined by the electromagnetic field distribution patterns, which are a kind of…

We present an analytical modal description of the rich physics involved in hybrid plasmonic-photonic devices that is confirmed by full dipole solutions of Maxwell's equations. Strong frequency-dependence for the spontaneous emission decay…

Mesoscale and Nanoscale Physics · Physics 2017-06-26 Mohsen Kamandar Dezfouli , Reuven Gordon , Stephen Hughes