Experimental observations of a left-handed material that obeys Snell's law

被引：636
作者：
Houck, AA
Brock, JB
Chuang, IL [1 ]
机构：
[1] MIT, Media Lab, Ctr Bits & Atoms, Cambridge, MA 02139 USA
[2] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA
来源：
PHYSICAL REVIEW LETTERS | 2003年 / 90卷 / 13期
关键词：
D O I：
10.1103/PhysRevLett.90.137401
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We measure two-dimensional profiles of collimated microwave beams transmitted through composite wire and split-ring resonator prisms. Prior experiments suggest these structures have a negative index of refraction, though these claims have been questioned. Our 2D measurements demonstrate that transmission obeys Snell's law with a negative index, confirming the refractive nature of this signal and refuting alternatives posed in the criticisms. In addition, we present preliminary evidence that a flat rectangular slab of this material can focus power from a point source.
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