Sub-diffraction-limited far-field imaging in
infrared

doi:10.1007/s11467-010-0109-4

Front. Phys.

2010, Vol. 5

Issue (3) : 324-329 https://doi.org/10.1007/s11467-010-0109-4

Research articles

Sub-diffraction-limited far-field imaging in infrared

Pratik CHATURVEDI,Nicholas X. FANG,

Department of Mechanical Science & Engineering, University of Illinois at Urbana-Champaign, 1206 W. Green St., Urbana, IL 61801, USA;

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Abstract We investigated a far-field superlens operating at mid-infrared wavelength that allows resolving subwavelength features in the far-field. By utilizing evanescent enhancement provided by surface plasmon excitation of silver nanorods and Moiré effect, we numerically demonstrated that subwavelength information of an object can be converted to propagating information. This information can then be captured by conventional optical components. A simple image reconstruction algorithm can restore the subwavelength object. A sub-diffraction-limited resolution of 2.5 μm at 6-μm wavelength is demonstrated.

Keywords infrared imaging surface plasmons subwavelength structures metamaterials superresolution

Issue Date: 05 September 2010

Cite this article:

Pratik CHATURVEDI,Nicholas X. FANG. Sub-diffraction-limited far-field imaging in infrared[J]. Front. Phys. , 2010, 5(3): 324-329.

URL:

https://academic.hep.com.cn/fop/EN/10.1007/s11467-010-0109-4
https://academic.hep.com.cn/fop/EN/Y2010/V5/I3/324

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