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Focusing Beyond the Diffraction Limit with Far-Field Time Reversal
Abstract
We present an approach for subwavelength focusing of microwaves using both a time-reversal mirror placed in the far field and a random distribution of scatterers placed in the near field of the focusing point. The far-field time-reversal mirror is used to build the time-reversed wave field, which interacts with the random medium to regenerate not only the propagating waves but also the evanescent waves required to refocus below the diffraction limit. Focal spots as small as one-thirtieth of a wavelength are described. We present one example of an application to telecommunications, which shows enhancement of the information transmission rate by a factor of 3.
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Citations
Cites
Negative Refraction Makes a Perfect Lens
Pendry, J. B. (2000) · Physical Review Letters · doi:10.1103/physrevlett.85.3966 · Cited by 12,159
Cited by
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Vellekoop, I. M., & Mosk, A. P. (2007) · Optics Letters · doi:10.1364/ol.32.002309 · Cited by 1,919
Controlling waves in space and time for imaging and focusing in complex media
Mosk, A. P., Lagendijk, A., Lerosey, G., & Fink, M. (2012) · Nature Photonics · doi:10.1038/nphoton.2012.88 · Cited by 1,536
Self-citationNanoplasmonics: Past, present, and glimpse into future
Stockman, M. I. (2011) · Optics Express · doi:10.1364/oe.19.022029 · Cited by 1,109
A holey-structured metamaterial for acoustic deep-subwavelength imaging
Zhu, J., Christensen, J., Jung, J., Martin-Moreno, L., Yin, X., Fok, L., Zhang, X., & Garcia-Vidal, F. J. (2011) · Nature Physics · doi:10.1038/nphys1804 · Cited by 668
Principles of electromagnetic waves in metasurfaces
Luo, X. (2015) · Science China Physics, Mechanics & Astronomy · doi:10.1007/s11433-015-5688-1 · Cited by 580
Metadata
- Authors
- Lerosey, G., de Rosny, J., Tourin, A., & Fink, M.
- Venue
- Science
- Published
- 2007-02-23
- Volume
- 315
- Issue
- 5815
- Pages
- 1120-1122
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2037437563
- Cited by
- 694
- References
- 1
- FWCI
- 21.69
- Type
- journal article
- Language
- en
- Open access
- closed
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- Lerosey, G., de Rosny, J., Tourin, A., & Fink, M. (2007). Focusing Beyond the Diffraction Limit with Far-Field Time Reversal. Science. https://doi.org/10.1126/science.1134824
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
