A photonic-crystal optical antenna for extremely large local-field enhancement

We propose a novel design of an all-dielectric optical antenna based on photonic-band-gap confinement. Specifically, we have engineered the photonic-crystal dipole mode to have broad spectral response (Q ~70) and well-directed vertical-radiation by introducing a plane mirror below the cavity. Consid...

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Detalles Bibliográficos
Autores principales: Chang, Hyun-Joo, Kim, Se-Heon, Lee, Yong-Hee, Kartalov, Emil P., Scherer, Axel
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Optical Society of America 2010
Materias:
Research-Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3408922/
https://www.ncbi.nlm.nih.gov/pubmed/21164762
http://dx.doi.org/10.1364/OE.18.024163
Descripción
Sumario:We propose a novel design of an all-dielectric optical antenna based on photonic-band-gap confinement. Specifically, we have engineered the photonic-crystal dipole mode to have broad spectral response (Q ~70) and well-directed vertical-radiation by introducing a plane mirror below the cavity. Considerably large local electric-field intensity enhancement ~4,500 is expected from the proposed design for a normally incident planewave. Furthermore, an analytic model developed based on coupled-mode theory predicts that the electric-field intensity enhancement can easily be over 100,000 by employing reasonably high-Q (~10,000) resonators.

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