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Title: Demonstration of a Highly Efficient Terahertz Flat Lens Employing Tri-Layer Metasurfaces

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.

Authors:
ORCiD logo [1];  [2];  [2];  [2]; ORCiD logo [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Univ. of Adelaide, SA (Australia)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); Australian Research Council (ARC)
OSTI Identifier:
1460638
Alternate Identifier(s):
OSTI ID: 1353304
Report Number(s):
LA-UR-17-20891
Journal ID: ISSN 0146-9592
Grant/Contract Number:  
AC52-06NA25396; FT120100351; DP140104651
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Optics Letters
Additional Journal Information:
Journal Volume: 42; Journal Issue: 9; Journal ID: ISSN 0146-9592
Publisher:
Optical Society of America (OSA)
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Chang, Chun-Chieh, Headland, Daniel, Abbott, Derek, Withayachumnankul, Withawat, and Chen, Houtong. Demonstration of a Highly Efficient Terahertz Flat Lens Employing Tri-Layer Metasurfaces. United States: N. p., 2017. Web. doi:10.1364/OL.42.001867.
Chang, Chun-Chieh, Headland, Daniel, Abbott, Derek, Withayachumnankul, Withawat, & Chen, Houtong. Demonstration of a Highly Efficient Terahertz Flat Lens Employing Tri-Layer Metasurfaces. United States. doi:10.1364/OL.42.001867.
Chang, Chun-Chieh, Headland, Daniel, Abbott, Derek, Withayachumnankul, Withawat, and Chen, Houtong. Mon . "Demonstration of a Highly Efficient Terahertz Flat Lens Employing Tri-Layer Metasurfaces". United States. doi:10.1364/OL.42.001867. https://www.osti.gov/servlets/purl/1460638.
@article{osti_1460638,
title = {Demonstration of a Highly Efficient Terahertz Flat Lens Employing Tri-Layer Metasurfaces},
author = {Chang, Chun-Chieh and Headland, Daniel and Abbott, Derek and Withayachumnankul, Withawat and Chen, Houtong},
abstractNote = {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.},
doi = {10.1364/OL.42.001867},
journal = {Optics Letters},
number = 9,
volume = 42,
place = {United States},
year = {Mon May 01 00:00:00 EDT 2017},
month = {Mon May 01 00:00:00 EDT 2017}
}

Journal Article:
Free Publicly Available Full Text
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Cited by: 4 works
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