Numerical simulation of interaction of terahertz waves with metal diffraction gratings | Zendy

Oleg E. Kameshkov | Zendy; V. V. Gerasimov | Zendy; B. A. Knyazev | Zendy

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Numerical simulation of interaction of terahertz waves with metal diffraction gratings

Author(s) -

Oleg E. Kameshkov,

V. V. Gerasimov,

B. A. Knyazev

Publication year - 2020

Publication title -

aip conference proceedings

Language(s) - English

Resource type - Conference proceedings

SCImago Journal Rank - 0.177

H-Index - 75

eISSN - 1551-7616

pISSN - 0094-243X

DOI - 10.1063/5.0030378

Subject(s) - terahertz radiation , surface plasmon polariton , optics , surface plasmon , plasmon , wavelength , groove (engineering) , grating , materials science , diffraction , polariton , diffraction grating , surface plasmon resonance , surface wave , excitation , dispersion (optics) , optoelectronics , physics , quantum mechanics , nanoparticle , metallurgy , nanotechnology

In the terahertz plasmonics, it is widely used wavelength 1D grooved metal gratings for excitation of surface plasmon polaritons (SPPs). SPPs are traveling charge density waves at the surface of conducting materials. Since these modes have a nonradiative nature, it is possible to excite them only if the configuration providing the wavevector-matching condition between the incident light and SPP dispersion law. The wavelength gratings are the most suitable and cheaper solution to satisfy this requirement. The careful optimization of the most suitable experimental parameters by the numerical simulations leads to the enhancement of surface plasmon resonance response. In this paper, numerical results of grating optimization with different groove profiles are discussed.

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