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On the phase of plasmons excited by slits in a metal film
2006
Optics Express
Preserved Fulltext
The excitation of surface plasmons by subwavelength slits in metal films is studied using a rigorous diffraction model. It is shown that the plasmon is launched by a slit in antiphase with the incident magnetic field. This is true independent of slit width and of the metal used. Using this phase information, maxima and minima in transmission are explained in the case of two and more slits.
doi:10.1364/oe.14.011823
pmid:19529605
fatcat:jcxg3z44nzc4lmuyr42gtzh2qu