Direct characterization of focusing light by negative refraction in a photonic crystal flat lens

Jie Tian, Min Yan, Min Qiu, Carl G. Ribbing, Ya-Zhao Liu et al.
We report experimental measurements of the field distribution of the light spot focused by a two-dimensional photonic crystal flat lens at wavelengths 1.511.58 [mu]m. The photonic crystal slab is fabricated on a silicon-on-insulator substrate by focused-ion-beam direct milling. We confirm the light ... [Appl. Phys. Lett. 93, 191114 (2008)] published Fri Nov 14, 2008.
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