Grbic Anthony, Eleftheriades George V
The Edward S. Rogers Sr. Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario, Canada M5S 3G4.
Phys Rev Lett. 2004 Mar 19;92(11):117403. doi: 10.1103/PhysRevLett.92.117403. Epub 2004 Mar 18.
We report experimental results at 1.057 GHz that demonstrate the ability of a planar left-handed lens, with a relative refractive index of -1, to form images that overcome the diffraction limit. The left-handed lens is a planar slab consisting of a grid of printed metallic strips over a ground plane, loaded with series capacitors (C) and shunt inductors (L). The measured half-power beamwidth of the point-source image formed by the left-handed lens is 0.21 effective wavelengths, which is significantly narrower than that of the diffraction-limited image corresponding to 0.36 wavelengths.
我们报告了在1.057吉赫兹下的实验结果，这些结果证明了相对折射率为-1的平面左手透镜能够形成克服衍射极限的图像。左手透镜是一个平面平板，由接地平面上的印刷金属条网格组成，并加载有串联电容器（C）和并联电感器（L）。由左手透镜形成的点源图像的测量半功率波束宽度为0.21个有效波长，这明显窄于对应于0.36波长的衍射极限图像的半功率波束宽度。
