Negative refraction can make non-diffracting beams.
نویسندگان
چکیده
We report the results of simulations relating to the illumination of a structure consisting of a slab constructed from a 2-D hexagonal array of metal rods with a terahertz frequency source. As a consequence of negative refraction an essentially non-divergent beam pattern is observed. Although the results presented relate to the terahertz regime they should also be applicable at other frequencies.
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عنوان ژورنال:
- Optics express
دوره 16 19 شماره
صفحات -
تاریخ انتشار 2008