Experimental studies of far-field superlens for sub-diffractional optical imaging | Zendy

Zhaowei Liu | Zendy; Stéphane Durant | Zendy; Hyesog Lee | Zendy; Yuri Pikus | Zendy; Yi Xiong | Zendy; Cheng Sun | Zendy; Xiang Zhang | Zendy

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Experimental studies of far-field superlens for sub-diffractional optical imaging

Author(s) -

Zhaowei Liu,

Stéphane Durant,

Hyesog Lee,

Yuri Pikus,

Yi Xiong,

Cheng Sun,

Xiang Zhang

Publication year - 2007

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.15.006947

Subject(s) - superlens , optics , image resolution , near and far field , physics , near field scanning optical microscope , ghost imaging , field (mathematics) , resolution (logic) , evanescent wave , point spread function , computer science , optical microscope , scanning electron microscope , mathematics , artificial intelligence , pure mathematics

Contrary to the conventional near-field superlensing, subwavelength superlens imaging is experimentally demonstrated in the far-field. The key element is termed as a Far-field SuperLens (FSL) which consists of a conventional superlens and a nanoscale coupler. The evanescent fields from the object are enhanced and then converted into propagating fields by the FSL. By only measuring the propagating field in the far-field, the object image can be reconstructed with subwavelength resolution. As an example of this concept, we design and fabricate a silver structured one dimensional FSL. Experimental results show that feature resolution of better than 50nm is possible using current FSL design.

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