Asymmetric out-of-plane power distribution in a two-dimensional photonic crystal nanocavity.
Opt Lett
; 40(14): 3372-5, 2015 Jul 15.
Article
em En
| MEDLINE
| ID: mdl-26176472
ABSTRACT
Conventional air-bridge two-dimensional photonic crystal (2D-PhC) nanocavities emit light with an equal power distribution for upward and downward out-of-plane directions. Some applications, however, require concentration of the radiation in a preferred direction. In this Letter, we design a 2D-PhC nanocavity that radiates dominantly into one of the out-of-plane directions with a narrow far-field distribution. Our design is based on a conventional air-bridge L3 photonic crystal nanocavity. The asymmetric out-of-plane power distribution is achieved solely by adding periodic shallow holes on the slab surface, which also function as a second-order grating for the directional beaming.
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01-internacional
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MEDLINE
Idioma:
En
Ano de publicação:
2015
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Article