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Cited 104 time in webofscience Cited 128 time in scopus
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Complete amplitude and phase control of light using broadband holographic metasurfaces

Title
Complete amplitude and phase control of light using broadband holographic metasurfaces
Authors
Lee, Gun-YealYOON, GWANHOLee, Seung-YeolYun, HansikCho, JaebumLee, KyookeunKim, HwiRHO, JUNSUKLee, Byoungho
Date Issued
Mar-2018
Publisher
Royal Society of Chemistry
Abstract
Reconstruction of light profiles with amplitude and phase information, called holography, is an attractive optical technology with various significant applications such as three-dimensional imaging and optical data storage. Subwavelength spatial control of both amplitude and phase of light is an essential requirement for an ideal hologram. However, traditional holographic devices suffer from their restricted capabilities of incomplete modulation in both amplitude and phase of visible light; this results in sacrifice of optical information and undesirable occurrences of critical noises in holographic images. Herein, we have proposed a novel metasurface that is capable of completely controlling both the amplitude and phase profiles of visible light independently with subwavelength spatial resolution. The full, continuous, and broadband control of both amplitude and phase was achieved using X-shaped meta-atoms based on the expanded concept of the Pancharatnam-Berry phase. The first experimental demonstrations of the complete complex-amplitude holograms with subwavelength definition at visible wavelengths were achieved, and excellent performances with a remarkable signal-to-noise ratio as compared to those of traditional phase-only holograms were obtained. Extraordinary control capability with versatile advantages of our metasurface paves a way to an ideal holography, which is expected to be a significant advancement in the field of optical holography and metasurfaces.
URI
http://oasis.postech.ac.kr/handle/2014.oak/41168
ISSN
2040-3364
Article Type
Article
Citation
Nanoscale, vol. 10, no. 9, page. 4237 - 4245, 2018-03
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노준석RHO, JUNSUK
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