Fano Resonances in the Linear and Nonlinear Plasmonic Response

Date

2018-01-01

Author

Taşgın, Mehmet Emre
Bek, Alpan
Postacı, Selen

Metadata

Show full item record

Item Usage Stats

272
views

0
downloads

Fano resonances manifest novel phenomena both in linear and nonlinear response of plasmonic nanomaterials. They can extend the lifetime of plasmonic excitations, enabling the operation of nanolasers, or they can increase the fluorescence of quantum emitters. They also provide control over nonlinear optical processes such as second harmonic generation and surface enhanced Raman scattering. Fano resonances can both enhance and suppress nonlinear response. Interference of two or more absorption/conversion paths is responsible for the appearance of these effects. In this Chapter, we demonstrate explicitly—on a single equation—how path interference takes part in linear and nonlinear Fano resonances.

URI

https://hdl.handle.net/11511/86183
https://www.researchgate.net/publication/329069587_Fano_Resonances_in_the_Linear_and_Nonlinear_Plasmonic_Response_Physics_and_Applications

Relation

Fano Resonances in Opticsand Microwaves

Collections

Department of Physics, Book / Book chapter

Suggestions

OpenMETU
Core

Fano-control of down-conversion in a nonlinear crystal via plasmonic-quantum emitter hybrid structures Artvin, Zafer; Gunay, Mehmet; Bek, Alpan; TAŞGIN, MEHMET EMRE (The Optical Society, 2020-12-01) Control of the nonlinear response of nanostructures via path interference effects, i.e., Fano resonances, has been studied extensively. In such studies, a frequency conversion process takes place near a hot spot. Here, we study the case where the frequency conversion process takes place along the body of a nonlinear crystal. Metal nanoparticle-quantum emitter dimers control the down-conversion process, taking place throughout the crystal body, via introducing interfering conversion paths. Dimers behave as i...
Continuous-time nonlinear estimation filters using UKF-aided gaussian sum representations Gökçe, Murat; Kuzuoğlu, Mustafa; Department of Electrical and Electronics Engineering (2014) A nonlinear filtering method is developed for continuous-time nonlinear systems with observations/measurements carried out in discrete-time by means of UKFaided Gaussian sum representations. The time evolution of the probability density function (pdf) of the state variables (or the a priori pdf) is approximated by solving the Fokker-Planck equation numerically using Euler’s method. At every Euler step, the values of the a priori pdf are evaluated at deterministic sample points. These values are used with Ga...
Multinucleon transfer in Ni-58+Ni-60 and Ni-60+Ni-60 in a stochastic mean-field approach Yilmaz, B.; Ayik, S.; Yılmaz, Osman; Umar, A. S. (2018-09-07) The multinucleon exchange mechanism in Ni-58 + Ni-60 and Ni-60 + Ni-60 collisions is analyzed in the framework of the stochastic mean-field approach. The results of calculations are compared with the time-dependent random-phase approximation (TDRPA) calculations and the recent data of Ni-58 + Ni-60. A good description of the data and a relatively good agreement with the TDRPA calculations are found.
Fano enhancement of unlocalized nonlinear optical processes Günay, Mehmet; Cicek, Ahmet; Korozlu, Nurettin; Bek, Alpan; TAŞGIN, MEHMET EMRE (2021-12-15) Field localization boosts nonlinear optical processes at the hot spots of metal nanostructures. Fano resonances can further enhance these "local"processes taking place at the hot spots. However, in conventional nonlinear materials, the frequency conversion takes place along the entire crystal body. That is, the conversion process is "unlocalized."The path interference (Fano resonance) schemes developed for localized processes become useless in such materials. Here, we develop Fano enhancement schemes for un...
Hamilton-Jacobi theory of discrete, regular constrained systems Güler, Y. (Springer Science and Business Media LLC, 1987-8) The Hamilton-Jacobi differential equation of a discrete system with constraint equationsG α=0 is constructed making use of Carathéodory’s equivalent Lagrangian method. Introduction of Lagrange’s multipliersλ˙α as generalized velocities enables us to treat the constraint functionsG α as the generalized momenta conjugate toλ˙α. Canonical equations of motion are determined.

Citation Formats

M. E. Taşgın, A. Bek, and S. Postacı, Fano Resonances in the Linear and Nonlinear Plasmonic Response . 2018, p. 31.