Flat lensing in the visible frequency range by woodpile photonic crystals.
نویسندگان
چکیده
We experimentally demonstrate full two-dimensional focalization of light beams at visible frequencies by a three-dimensional woodpile photonic crystal. The focalization (the flat lensing) with focal distances of the order of 50-70 μm is experimentally demonstrated. Experimental results are compared with numerical calculations and interpreted by harmonic expansion studies.
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عنوان ژورنال:
- Optics letters
دوره 38 14 شماره
صفحات -
تاریخ انتشار 2013