Imaging with subwavelength resolution by a generalized superlens at infrared wavelengths
Imaging with subwavelength resolution by a generalized superlens at infrared wavelengths
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DOI：
10.1364/ol.34.001994
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发表时间：
2009-07-01
期刊：
影响因子：
3.6
通讯作者：
Sridhar, S.
中科院分区：
文献类型：
--
作者：
Casse, B. D. F.;Lu, W. T.;Sridhar, S.
我们在实验上演示了光子晶体棱镜的负折射和光子晶体平板在1.5 μ m波长下对点光源的成像。在InGaAsP/InP异质结构平台上纳米制造光子晶体结构，并使用近场扫描光学显微镜进行光学表征。通过设计合适的透镜表面终端，实现了0.12 λ（2）的像斑尺寸，证明了具有远低于阿贝衍射极限（0.5 λ（2））的亚波长分辨率的超透镜成像。(C)2009年美国光学学会
We demonstrate experimentally negative refraction by a photonic crystal prism and imaging of a point source by a photonic crystal slab at 1.5 mu m wavelength. The photonic crystal structures were nanofabricated in a InGaAsP/InP heterostructure platform, and optical characterization was performed using a near-field scanning optical microscope. By designing a suitable lens surface termination, an image spot size of 0.12 lambda(2) was achieved, demonstrating superlens imaging with subwavelength resolution well below Abbe's diffraction limit (0.5 lambda(2)). (C) 2009 Optical Society of America