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Achieving subdiffraction imaging through bound surface states in negative refraction photonic crystals in the near-infrared range

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. Green open access

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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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