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Achieving subdiffraction imaging through bound surface states in negative refraction photonic crystals in the near-infrared range.
- Source :
-
Physical review letters [Phys Rev Lett] 2008 May 09; Vol. 100 (18), pp. 187401. Date of Electronic Publication: 2008 May 05. - Publication Year :
- 2008
-
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, approximately 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 0.47lambda, clearly smaller than the diffraction limit of 0.61lambda. Importantly, we show this subdiffraction imaging is due to the resonant excitation of surface slab modes.
Details
- Language :
- English
- ISSN :
- 0031-9007
- Volume :
- 100
- Issue :
- 18
- Database :
- MEDLINE
- Journal :
- Physical review letters
- Publication Type :
- Academic Journal
- Accession number :
- 18518415
- Full Text :
- https://doi.org/10.1103/PhysRevLett.100.187401