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Journal Article
Two-Dimensional Reconfigurable Gradient Index Memory Metasurface
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- Authors
- M. D. Goldflam, T. Driscoll, D. Barnas, O. Khatib, M. Royal, N. Marie Jokerst, D. R. Smith, Bong-Jun Kim, Giwan Seo, Hyun-Tak Kim, D. N. Basov
- Issue Date
- 2013-06
- Citation
- Applied Physics Letters, v.102, no.22, pp.1-4
- ISSN
- 0003-6951
- Publisher
- American Institute of Physics (AIP)
- Language
- English
- Type
- Journal Article
- Abstract
- Creation and control of spatial gradients in electromagnetic properties is a central theme underlying optical device design. In this work, we demonstrate that through modification of the spatial and temporal distribution of current, we can obtain increased control over the shape of these gradients. We are able to write spatially sharp gradients with ~50% change in the index of refraction over length scales of only a few wavelengths as observed through diffraction limited terahertz spectroscopy. Furthermore, we assess the potentials for such gradients for beam-steering applications. © 2013 AIP Publishing LLC.
- KSP Keywords
- Diffraction limited, Electromagnetic Properties, Gradient index, Sharp gradients, Spatial and temporal distribution, Spatial gradients, beam steering, device design, index of refraction, length scales, optical devices