Open AccessImaging properties of photonic crystals
Author(s) -
Juan Luis García-Pomar,
M. NietoVesperinas
Publication year - 2007
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.15.007786
Subject(s) - optics , photonic crystal , negative refraction , slab , refraction , photonics , lossless compression , ideal (ethics) , metamaterial , materials science , physics , computer science , philosophy , epistemology , data compression , geophysics , computer vision
We observe, by means of finite element calculations, that some photonic crystals produce negative refraction with almost circular isofrequency lines of their band diagram, so that a slab of this structure presents a large degree of isoplanatism and thus can behave like an imaging system. However, it has aberrations on comparison with a model of ideal lossless left-handed material within an effective medium theory. Further, we see that it does not produce subwavelength focusing. We discuss the limitations and requirements for such photonic crystal slabs to yield superresolved images of extended objects.