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Invited Article: Narrowband terahertz bandpass filters employing stacked bilayer metasurface antireflection structures

Journal Article · · APL Photonics
DOI:https://doi.org/10.1063/1.5003984· OSTI ID:1423978
 [1];  [2];  [3];  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Harbin Inst. of Technology (China)
  3. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
We experimentally demonstrate high-performance narrowband terahertz (THz) bandpass filters through cascading multiple bilayer metasurface antireflection structures. Each bilayer metasurface, consisting of a square array of silicon pillars with a self-aligned top gold resonator-array and a complementary bottom gold slot-array, enables near-zero reflection and simultaneously close-to-unity single-band transmission at designed operational frequencies in the THz spectral region. The THz bandpass filters based on stacked bilayer metasurfaces allow a fairly narrow, high-transmission passband, and a fast roll-off to an extremely clean background outside the passband, thereby providing superior bandpass performance. The demonstrated scheme of narrowband THz bandpass filtering is of great importance for a variety of applications where spectrally clean, high THz transmission over a narrow bandwidth is desired, such as THz spectroscopy and imaging, molecular detection and monitoring, security screening, and THz wireless communications.
Research Organization:
Los Alamos National Laboratory (LANL)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-06NA25396
OSTI ID:
1423978
Alternate ID(s):
OSTI ID: 1419699
Report Number(s):
LA-UR-17-28324
Journal Information:
APL Photonics, Journal Name: APL Photonics Journal Issue: 5 Vol. 3; ISSN 2378-0967
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (10)

Empowered Layer Effects and Prominent Properties in Few‐Layer Metasurfaces journal March 2019
Arbitrary Manipulation of Light Intensity by Bilayer Aluminum Metasurfaces journal May 2019
Design, Fabrication, and Modulation of THz Bandpass Metamaterials journal October 2019
High Throughput Laser Process of Transparent Conducting Surfaces for Terahertz Bandpass Ultrathin Metamaterials journal February 2019
Preface to Special Topic: Frontiers on THz photonic devices journal May 2018
Terahertz polarization-maintaining subwavelength filters journal January 2018
Deep learning for accelerated all-dielectric metasurface design journal January 2019
Voltage-actuated thermally tunable on-chip terahertz filters based on a whispering gallery mode resonator journal January 2019
Terahertz tunable filter and modulator based on magneto plasmon in transverse magnetized InSb journal December 2019
Enhanced FANO Structure Based on Tip-Field-Enhancement Theory journal November 2019

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