Near-field focusing by a photonic crystal concave mirror

Y. Saado; M. Golosovsky; D. Davidov; A. Frenkel

doi:10.1063/1.2058179

Near-field focusing by a photonic crystal concave mirror

Y. Saado^*, M. Golosovsky, D. Davidov, A. Frenkel

^*Corresponding author for this work

Racah Institute of Physics

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

We have studied the electric-field distribution in the photonic crystal (PC) concave mirror. This was done numerically and was verified in experiment. The field mapping in our experiments was performed using the Slater's perturbation technique which was modified for nonresonant structures. The PC consists of a planar array of dielectric rods with a trapezoidal depression that forms the concave mirror. At the midgap frequency of the first stopband of the underlying photonic crystal, the mirror allows focusing to a subwavelength spot size of 0.2λ×0.2λ. The intensity is enhanced by 16 times at the focal point, as compared with the incident wave.

Original language	English
Article number	063105
Journal	Journal of Applied Physics
Volume	98
Issue number	6
DOIs	https://doi.org/10.1063/1.2058179
State	Published - 15 Sep 2005

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Near-field focusing by a photonic crystal concave mirror

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