All-angle beam refocusing in nonuniform triangular photonic crystal slabs

• DOI: 10.1364/josab.24.000997
• Publication Date: 2007-03-20T20:21:52Z
• Authors: Remigius Zengerle; Phuong Chi Hoang
• Keywords: Superstructure; Point source; Crystal (programming language); Negative Refraction

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