Tuesday, July 30, 2013

1307.7255 (Sergio G. Rodrigo et al.)

Theory of Absorption Induced Transparency    [PDF]

Sergio G. Rodrigo, F. J. García-Vidal, L. Martín-Moreno
Recently, Hutchinson et al. (Angew. Chem. Int. Ed. 50, 2085 (2011)) discovered the phenomenon of Absorption Induced Transparency, namely, that the optical transmission through an array of subwavelength holes in a metal film can be enhanced close to absorption resonances of dyes, intentionally placed in the system. Here, it is theoretically demonstrated that this phenomenon requires that the absorbent fills the holes and that it occurs also for single holes. Furthermore, it is shown that the transmission process is non-resonant, being composed by a sequential passage of the EM field through the hole. Finally, the physical origin of the phenomenon is demonstrated to be non-plasmonic, which implies that Absorption Induced Transparency should also occur at the infrared or Teraherz frequency regimes.
View original: http://arxiv.org/abs/1307.7255

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