Chatterjee, R;
Panoiu, NC;
Liu, K;
Dios, Z;
Yu, MB;
Doan, MT;
Kaufman, LJ;
... Wong, CW; + view all
(2008)
Achieving subdiffraction imaging through bound surface states in negative refraction photonic crystals in the near-infrared range.
PHYS REV LETT
, 100
(18)
, Article 187401. 10.1103/PhysRevLett.100.187401.
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Abstract
We report the observation of imaging beyond the diffraction limit due to bound surface states in negative refraction photonic crystals. We achieve an effective negative index figure of merit [-Re(n)/Im(n)] of at least 380, similar to 125x improvement over recent efforts in the near-infrared range, with a 0.4 THz bandwidth. Supported by numerical and theoretical analyses, the observed near-field resolution is 0.47 lambda, clearly smaller than the diffraction limit of 0.61 lambda. Importantly, we show this subdiffraction imaging is due to the resonant excitation of surface slab modes.
Type: | Article |
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Title: | Achieving subdiffraction imaging through bound surface states in negative refraction photonic crystals in the near-infrared range |
Open access status: | An open access version is available from UCL Discovery |
DOI: | 10.1103/PhysRevLett.100.187401 |
Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.100.187401 |
Language: | English |
Additional information: | © 2008 The American Physical Society |
Keywords: | METAMATERIALS, FREQUENCIES, SUPERLENS, LIGHT, LENS |
UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
URI: | https://discovery.ucl.ac.uk/id/eprint/142163 |
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