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구분 SCI
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상세정보

학술지 Two-Dimensional Reconfigurable Gradient Index Memory Metasurface
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저자
M. D. Goldflam, T. Driscoll, D. Barnas, O. Khatib, M. Royal, N. Marie Jokerst, D. R. Smith, 김봉준, 서기완, 김현탁, D. N. Basov
발행일
201306
출처
Applied Physics Letters, v.102 no.22, pp.1-4
ISSN
0003-6951
출판사
American Institute of Physics (AIP)
DOI
https://dx.doi.org/10.1063/1.4809534
협약과제
13ZE1100, ETRI 창의연구실 사업, 손승원
초록
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 제안 키워드
Diffraction limited, Electromagnetic properties, Gradient index, Index of refraction, Length scales, Optical devices, Sharp gradients, Spatial and temporal distribution, Spatial gradients, beam steering, device design