Surface Plasmon Singularities

Autor: Gabriel Martínez-Niconoff, P. Martinez-Vara, G. Diaz-Gonzalez, J. Silva-Barranco, A. Carbajal-Domínguez
Jazyk: angličtina
Rok vydání: 2012
Předmět:
Zdroj: International Journal of Optics, Vol 2012 (2012)
Druh dokumentu: article
ISSN: 1687-9384
1687-9392
DOI: 10.1155/2012/152937
Popis: With the purpose to compare the physical features of the electromagnetic field, we describe the synthesis of optical singularities propagating in the free space and on a metal surface. In both cases the electromagnetic field has a slit-shaped curve as a boundary condition, and the singularities correspond to a shock wave that is a consequence of the curvature of the slit curve. As prototypes, we generate singularities that correspond to fold and cusped regions. We show that singularities in free space may generate bifurcation effects while plasmon fields do not generate these kinds of effects. Experimental results for free-space propagation are presented and for surface plasmon fields, computer simulations are shown.
Databáze: Directory of Open Access Journals
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