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Title: A three-dimensional all-metal terahertz metamaterial perfect absorber

Abstract

We present a three-dimensional terahertz metamaterial perfect absorber (MPA) that exhibits a high quality factor and is polarization insensitive. The unit cell is composed of two orthogonally oriented copper stand-up split ring resonators deposited on a copper ground plane with capacitive gaps in free space away from the substrate. Near unity (99.6%) absorption at ~1.65 THz is experimentally obtained in excellent agreement with simulation results. The quality factor is ~37, which is quite large for a terahertz MPA because of reduced material losses in the all-metal structure. According to simulation results, the MPA is insensitive to the polarization of the incident wave, and more than 90% absorption can be achieved for angles of incidence up to 60° for both TE and TM polarized incident THz waves.

Authors:
 [1]; ORCiD logo [1]; ORCiD logo [2];  [2];  [1]; ORCiD logo [2];  [2]; ORCiD logo [1]
  1. Boston Univ., MA (United States)
  2. Univ. of California, San Diego, CA (United States)
Publication Date:
Research Org.:
Univ. of California, San Diego, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1473862
Alternate Identifier(s):
OSTI ID: 1373442
Grant/Contract Number:  
FG02-09ER46643; SC0002384
Resource Type:
Accepted Manuscript
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 111; Journal Issue: 5; Journal ID: ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Optical Metamaterials; Transition Metals; Polarization; Light Sensitive Materials; Antennas

Citation Formats

Wu, Meng, Zhao, Xiaoguang, Zhang, Jingdi, Schalch, Jacob, Duan, Guangwu, Cremin, Kevin, Averitt, Richard D., and Zhang, Xin. A three-dimensional all-metal terahertz metamaterial perfect absorber. United States: N. p., 2017. Web. doi:10.1063/1.4996897.
Wu, Meng, Zhao, Xiaoguang, Zhang, Jingdi, Schalch, Jacob, Duan, Guangwu, Cremin, Kevin, Averitt, Richard D., & Zhang, Xin. A three-dimensional all-metal terahertz metamaterial perfect absorber. United States. doi:10.1063/1.4996897.
Wu, Meng, Zhao, Xiaoguang, Zhang, Jingdi, Schalch, Jacob, Duan, Guangwu, Cremin, Kevin, Averitt, Richard D., and Zhang, Xin. Tue . "A three-dimensional all-metal terahertz metamaterial perfect absorber". United States. doi:10.1063/1.4996897. https://www.osti.gov/servlets/purl/1473862.
@article{osti_1473862,
title = {A three-dimensional all-metal terahertz metamaterial perfect absorber},
author = {Wu, Meng and Zhao, Xiaoguang and Zhang, Jingdi and Schalch, Jacob and Duan, Guangwu and Cremin, Kevin and Averitt, Richard D. and Zhang, Xin},
abstractNote = {We present a three-dimensional terahertz metamaterial perfect absorber (MPA) that exhibits a high quality factor and is polarization insensitive. The unit cell is composed of two orthogonally oriented copper stand-up split ring resonators deposited on a copper ground plane with capacitive gaps in free space away from the substrate. Near unity (99.6%) absorption at ~1.65 THz is experimentally obtained in excellent agreement with simulation results. The quality factor is ~37, which is quite large for a terahertz MPA because of reduced material losses in the all-metal structure. According to simulation results, the MPA is insensitive to the polarization of the incident wave, and more than 90% absorption can be achieved for angles of incidence up to 60° for both TE and TM polarized incident THz waves.},
doi = {10.1063/1.4996897},
journal = {Applied Physics Letters},
number = 5,
volume = 111,
place = {United States},
year = {2017},
month = {8}
}

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