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Confining light in deep subwavelength electromagnetic cavities

Vincent Ginis ; Philippe Tassin (Institutionen för teknisk fysik, Kondenserade materiens teori) ; Costas M. Soukoulis ; Irina Veretennicoff
Physical Review B - Condensed Matter and Materials Physics (1098-0121). Vol. 82 (2010), 11, p. 113102.
[Artikel, refereegranskad vetenskaplig]

We demonstrate that it is possible to confine electromagnetic radiation in cavities that are significantly smaller than the wavelength of the radiation it encapsulates. To this aim, we use the techniques of transformation optics. First, we present a "perfect cavity" of arbitrarily small size in which such confined modes can exist. Furthermore, we show that these eigenmodes have a continuous spectrum and that bending losses are absent, in contrast to what is observed in traditional microcavities. Finally, we introduce an alternative cavity configuration that is less sensitive to material imperfections and still exhibits deep subwavelength modes combined with high quality factor, even if considerable material losses are included. Such a cavity may be interesting for the storage of information in optical data processing and for applications in quantum optics.

Nyckelord: cavity, transformation optics, subwavelength confinement, metamaterials

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Denna post skapades 2013-10-03. Senast ändrad 2013-10-03.
CPL Pubid: 184610


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Institutioner (Chalmers)

Institutionen för teknisk fysik, Kondenserade materiens teori (1900-2015)


Nanovetenskap och nanoteknik
Optisk fysik
Den kondenserade materiens fysik
Övrig elektroteknik, elektronik och fotonik

Chalmers infrastruktur