DocumentCode :
67523
Title :
Accurate Analysis of Light Scattering and Absorption by an Infinite Flat Grating of Thin Silver Nanostrips in Free Space Using the Method of Analytical Regularization
Author :
Zinenko, Tatiana L. ; Marciniak, Marian ; Nosich, Alexander I.
Author_Institution :
Dept. of Quasioptics, Inst. of Radio Phys. & Electron., Kharkov, Ukraine
Volume :
19
Issue :
3
fYear :
2013
fDate :
May-June 2013
Firstpage :
9000108
Lastpage :
9000108
Abstract :
We study the plane wave scattering and absorption by a flat grating of thin silver nanostrips located in free space, in the visible-light range. The formulation involves generalized boundary conditions imposed on the strip median lines. We use an accurate numerical solution to this problem based on the dual-series equations and the method of analytical regularization. This guarantees fast convergence and controlled accuracy of computations. Reflectance, transmittance, and absorbance as a function of the wavelength and the grating parameters are analyzed. In addition to well-known surface-plasmon resonances, sharp resonances are revealed in the H-polarized scattering near but not equal to the Rayleigh wavelengths of nonzero diffraction orders; in the E-polarized scattering these resonances are not visible. Asymptotic formulas for the frequencies and natural fields of the grating resonances are presented.
Keywords :
diffraction gratings; light absorption; light diffraction; light reflection; light scattering; light transmission; nanophotonics; silver; Ag; E-polarized scattering; H-polarized scattering; Rayleigh wavelength; analytical regularization; fast convergence; free space; generalized boundary condition; infinite flat grating; light absorbance; light absorption; light reflectance; light scattering; light transmittance; nonzero diffraction order; plane wave scattering; thin nanostrip; Equations; Gratings; Optical polarization; Optical scattering; Silver; Strips; Absorption; generalized boundary conditions (GBC); grating; resonances; scattering; silver nanostrip;
fLanguage :
English
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
Publisher :
ieee
ISSN :
1077-260X
Type :
jour
DOI :
10.1109/JSTQE.2012.2227685
Filename :
6353499
Link To Document :
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