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 |
|---|---|
| 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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