Subwavelength far-field resolution in a square two-dimensional photonic crystal

Xiangdong Zhang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

It has been suggested that a subwavelength image can be realized by a photonic crystal slab with a square lattice in the lowest band. However, due to the anisotropy of dispersion in such a photonic structure, the image only appears in the near-field region. In this paper, we show that subwavelength far-field focusing and imaging, explicitly following the well-known wave-beam negative refraction law with relative refractive index of -1, can also be realized by a square photonic crystal through choosing suitable scatterers for the lowest valence band.

Original languageEnglish
Article number037601
JournalPhysical Review E
Volume71
Issue number3
DOIs
Publication statusPublished - Mar 2005
Externally publishedYes

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