Abstract

Negative ray refraction in optimized nonuniform triangular 2D photonic crystal slabs is used for efficient far-field refocusing of a point source. It is shown by numerical simulations that photonic crystal slabs with thicknesses between 10 and 0.6μm in conjunction with proposed superstructure transitions are able to refocus a point source diffraction limited with efficiencies of up to 97%.

© 2007 Optical Society of America

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