Please use this identifier to cite or link to this item: https://doi.org/10.1038/srep08660
Title: Engineering the phase front of light with phase-change material based planar lenses
Authors: Chen, Y 
Li, X
Sonnefraud, Y
Fernández-Domínguez, A.I
Luo, X
Hong, M 
Maier, S.A
Issue Date: 2015
Publisher: Nature Publishing Group
Citation: Chen, Y, Li, X, Sonnefraud, Y, Fernández-Domínguez, A.I, Luo, X, Hong, M, Maier, S.A (2015). Engineering the phase front of light with phase-change material based planar lenses. Scientific Reports 5 : 8660. ScholarBank@NUS Repository. https://doi.org/10.1038/srep08660
Abstract: A novel hybrid planar lens is proposed to engineer the far-field focusing patterns. It consists of an array of slits which are filled with phase-change material Ge2 Sb2 Te5 (GST). By varying the crystallization level of GST from 0% to 90%, the Fabry-Pérot resonance supported inside each slit can be spectrally shifted across the working wavelength at 1.55 ?m, which results in a transmitted electromagnetic phase modulation as large as 0.56?. Based on this geometrically fixed platform, different phase fronts can be constructed spatially on the lens plane by assigning the designed GST crystallization levels to the corresponding slits, achieving various far-field focusing patterns. The present work offers a promising route to realize tunable nanophotonic components, which can be used in optical circuits and imaging applications. © 2015, Nature Publishing Group. All rights reserved.
Source Title: Scientific Reports
URI: https://scholarbank.nus.edu.sg/handle/10635/175534
ISSN: 20452322
DOI: 10.1038/srep08660
Appears in Collections:Staff Publications
Elements

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
10_1038_srep08660.pdf1.23 MBAdobe PDF

OPEN

NoneView/Download

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.