Deep subwavelength imaging via tunable terahertz plasmons

Abbas, H. T. , Zeng, X., Nevels, R. D. and Zubairy, M. S. (2018) Deep subwavelength imaging via tunable terahertz plasmons. Applied Physics Letters, 113(5), 051106. (doi: 10.1063/1.5035312)

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A deep subwavelength structured illumination microscopy scheme via tunable plasmons is proposed. The sample is placed on a semiconductor heterostructure where terahertz plasmons generated by a current-driven instability illuminate it. Full coverage of the spatial frequency regime is obtained by tuning the plasmons through adjusting gate voltage. Hence, it is possible to reconstruct an image with a resolution down to 75 nm and up to two orders of magnitude beyond the diffraction limit. Due to the linear nature of the technique, only a weak illumination signal is required, which minimizes the likelihood of sample damage and has potential applications in bioimaging.

Item Type:Articles
Additional Information:This research was supported by National Priorities Research Program (NPRP) Grant No. 8-352-1-074 from the Qatar National Research Fund (QNRF).
Glasgow Author(s) Enlighten ID:Abbas, Dr Hasan
Authors: Abbas, H. T., Zeng, X., Nevels, R. D., and Zubairy, M. S.
College/School:College of Science and Engineering > School of Engineering
Journal Name:Applied Physics Letters
Publisher:AIP Publishing
ISSN (Online):1077-3118
Published Online:03 August 2018
Copyright Holders:Copyright © 2018 AIP Publishing
First Published:First published in Applied Physics Letters 113(5): 051106
Publisher Policy:Reproduced in accordance with the publisher copyright policy

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