Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/105755
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Type: | Journal article |
Title: | Demonstration of a highly efficient terahertz flat lens employing tri-layer metasurfaces |
Author: | Chang, C.-C. Headland, D. Abbott, D. Withayachumnankul, W. Chen, H.-T. |
Citation: | Optics Letters, 2017; 42(9):1867-1870 |
Publisher: | Optical Society of America |
Issue Date: | 2017 |
ISSN: | 0146-9592 1539-4794 |
Statement of Responsibility: | Chun-Chieh Chang, Daniel Headland, Derek Abbott, Withawat Withayachumnankul, and Hou-Tong Chen |
Abstract: | We demonstrate a terahertz flat lens based on tri-layer metasurfaces allowing for broadband linear polarization conversion, where the phase can be tuned through a full 2π range by tailoring the geometry of the subwavelength resonators. The lens functionality is realized by arranging these resonators to create a parabolic spatial phase profile. The fabricated 124-μm-thick device is characterized by scanning the beam profile and cross section, showing diffraction-limited focusing and ∼68% overall efficiency at the operating frequency of 400 GHz. This device has potential for applications in terahertz imaging and communications, as well as beam control in general. |
Description: | Published 1 May 2017 |
Rights: | © 2017 Optical Society of America |
DOI: | 10.1364/OL.42.001867 |
Grant ID: | http://purl.org/au-research/grants/arc/DP140104651 http://purl.org/au-research/grants/arc/FT120100351 |
Published version: | http://dx.doi.org/10.1364/ol.42.001867 |
Appears in Collections: | Aurora harvest 8 Physics publications |
Files in This Item:
File | Description | Size | Format | |
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hdl_105755.pdf | Accepted version | 5.61 MB | Adobe PDF | View/Open |
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