Numerical analysis of a nanowire grating plasmon

Preliminary results obtained in investigating a plane electromagnetic wave incident on a metal nanowire grating formed on a dielectric substrate, using FEM, are presented. The numerically simulated model is developed considering Cu, Au, Ag or other metal nanowire having a diameter of 40 nm - 800 nm, formed on dielectric substrates with a refractive index between 1.4 and 2.4. The transmission and reflection coefficients for refraction, specular reflection and first order diffraction are computed. The cases of dielectric substrate with metallic layers of different thicknesses deposited on the opposite side are also investigated.

[1]  James J. Cowan,et al.  Dispersion of surface plasmons in dielectric-metal coatings on concave diffraction gratings , 1970 .

[2]  Peter Vukusic,et al.  Development of a prototype gas sensor using surface plasmon resonance on gratings , 1994 .

[3]  Daniel Maystre,et al.  Brewster incidence for metallic gratings , 1976 .

[4]  R. Wood,et al.  On a Remarkable Case of Uneven Distribution of Light in a Diffraction Grating Spectrum , 1902 .

[5]  Daniel Maystre,et al.  The total absorption of light by a diffraction grating , 1976 .

[6]  Günter Gauglitz,et al.  Surface plasmon resonance sensors: review , 1999 .

[7]  H. Raether.  Surface Plasmons on Smooth and Rough Surfaces and on Gratings , 1988 .

[8]  D. Maystre,et al.  A new theoretical method for diffraction gratings and its numerical application , 1980 .

[9]  Lifeng Li,et al.  Oblique-coordinate-system-based Chandezon method for modeling one-dimensionally periodic, multilayer, inhomogeneous, anisotropic gratings , 1999 .

[10]  D. Heitmann,et al.  Grating couplers for surface plasmons excited on thin metal films in the Kretschmann-Raether configuration , 1999 .

[11]  J. Homola.  Surface plasmon resonance sensors for detection of chemical and biological species. , 2008, Chemical reviews.

[12]  D. Maystre,et al.  A systematic numerical study of Fourier gratings , 1982 .

[13]  M. Nevière,et al.  The Homogeneous Problem , 1980 .

[14]  R. McPhedran,et al.  A Detailed Theoretical Study of the Anomalies of a Sinusoidal Diffraction Grating , 1974 .

[15]  Ildar Salakhutdinov,et al.  Identity of long-range surface plasmons along asymmetric structures and their potential for refractometric sensors , 2001 .

[16]  R. McPhedran,et al.  Enhanced SPR sensitivity using periodic metallic structures. , 2007, Optics express.