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In this paper, we present photonic crystal flat lenses with interfaces engineered to improve the light transmittance thanks to a broad angles impedance matching. The interface engineering consists in the realization of antireflection gratings on the edges of the lenses which are designed to reduce the propagative waves reflectivity over a wide range of incident angles. The fabricated structures were measured in optical near-field and a four times enhancement of the light transmission efficiency is reported.
Published in:
Applied Physics Letters
(Volume:97
,
Issue:
7
)
Date of Publication: Aug 2010
- Page(s):
- 071119 - 071119-3
- ISSN :
- 0003-6951
- Digital Object Identifier :
- 10.1063/1.3473760
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 16 September 2010
- Issue Date :
- Aug 2010
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