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Title: Hybrid metasurface for ultra-broadband terahertz modulation

Abstract

We demonstrate an ultra-broadband free-space terahertz modulator based on a semiconductor-integrated metasurface. The modulator is made of a planar array of metal cut-wires on a silicon-on-sapphire substrate, where the silicon layer functions as photoconductive switches. Without external excitation, the cut-wire array exhibits a Lorentzian resonant response with a transmission passband spanning dc up to the fundamental dipole resonance above 2 THz. Under photoexcitation with 1.55 eV near-infrared light, the silicon regions in the cut-wire gaps become highly conductive, causing a transition of the resonant metasurface to a wire grating with a Drude response. In effect, the low-frequency passband below 2 THz evolves into a stopband for the incident terahertz waves. Experimental validations confirm a bandwidth of at least 100%, spanning 0.5 to 1.5 THz with -10 dB modulation depth. This modulation depth is far superior to -5 dB achievable from a plain silicon-on-sapphire substrate with effectively 25 times higher pumping energy. The proposed concept of ultra-broadband metasurface modulator can be readily extended to electrically controlled terahertz wave modulation.

Authors:
 [1]; ORCiD logo [2];  [1];  [1];  [1];  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Univ. of Adelaide (Australia)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1236572
Alternate Identifier(s):
OSTI ID: 1224275
Report Number(s):
LA-UR-14-27721
Journal ID: ISSN 0003-6951; APPLAB
Grant/Contract Number:  
AC52-06NA25396
Resource Type:
Accepted Manuscript
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 105; Journal Issue: 18; Journal ID: ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Heyes, Jane E., Withayachumnankul, Withawat, Grady, Nathaniel K., Chowdhury, Dibakar Roy, Azad, Abul K., and Chen, Hou-Tong. Hybrid metasurface for ultra-broadband terahertz modulation. United States: N. p., 2014. Web. doi:10.1063/1.4901050.
Heyes, Jane E., Withayachumnankul, Withawat, Grady, Nathaniel K., Chowdhury, Dibakar Roy, Azad, Abul K., & Chen, Hou-Tong. Hybrid metasurface for ultra-broadband terahertz modulation. United States. doi:10.1063/1.4901050.
Heyes, Jane E., Withayachumnankul, Withawat, Grady, Nathaniel K., Chowdhury, Dibakar Roy, Azad, Abul K., and Chen, Hou-Tong. Wed . "Hybrid metasurface for ultra-broadband terahertz modulation". United States. doi:10.1063/1.4901050. https://www.osti.gov/servlets/purl/1236572.
@article{osti_1236572,
title = {Hybrid metasurface for ultra-broadband terahertz modulation},
author = {Heyes, Jane E. and Withayachumnankul, Withawat and Grady, Nathaniel K. and Chowdhury, Dibakar Roy and Azad, Abul K. and Chen, Hou-Tong},
abstractNote = {We demonstrate an ultra-broadband free-space terahertz modulator based on a semiconductor-integrated metasurface. The modulator is made of a planar array of metal cut-wires on a silicon-on-sapphire substrate, where the silicon layer functions as photoconductive switches. Without external excitation, the cut-wire array exhibits a Lorentzian resonant response with a transmission passband spanning dc up to the fundamental dipole resonance above 2 THz. Under photoexcitation with 1.55 eV near-infrared light, the silicon regions in the cut-wire gaps become highly conductive, causing a transition of the resonant metasurface to a wire grating with a Drude response. In effect, the low-frequency passband below 2 THz evolves into a stopband for the incident terahertz waves. Experimental validations confirm a bandwidth of at least 100%, spanning 0.5 to 1.5 THz with -10 dB modulation depth. This modulation depth is far superior to -5 dB achievable from a plain silicon-on-sapphire substrate with effectively 25 times higher pumping energy. The proposed concept of ultra-broadband metasurface modulator can be readily extended to electrically controlled terahertz wave modulation.},
doi = {10.1063/1.4901050},
journal = {Applied Physics Letters},
number = 18,
volume = 105,
place = {United States},
year = {2014},
month = {11}
}

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Works referenced in this record:

Manipulation of terahertz radiation using metamaterials
journal, May 2011

  • Chen, H. -T.; O'Hara, J. F.; Azad, A. K.
  • Laser & Photonics Reviews, Vol. 5, Issue 4
  • DOI: 10.1002/lpor.201000043

Metamaterial Electromagnetic Wave Absorbers
journal, May 2012

  • Watts, Claire M.; Liu, Xianliang; Padilla, Willie J.
  • Advanced Materials, Vol. 24, Issue 23, p. OP98-OP120
  • DOI: 10.1002/adma.201200674

Plasmonic Resonance toward Terahertz Perfect Absorbers
journal, June 2014

  • Withayachumnankul, Withawat; Shah, Charan Manish; Fumeaux, Christophe
  • ACS Photonics, Vol. 1, Issue 7
  • DOI: 10.1021/ph500110t

Terahertz Metamaterials for Linear Polarization Conversion and Anomalous Refraction
journal, May 2013


Terahertz reflectarray as a polarizing beam splitter
journal, January 2014

  • Niu, Tiaoming; Withayachumnankul, Withawat; Upadhyay, Aditi
  • Optics Express, Vol. 22, Issue 13
  • DOI: 10.1364/OE.22.016148

Highly flexible broadband terahertz metamaterial quarter-wave plate: Highly flexible broadband terahertz metamaterial quarter-wave plate
journal, March 2014

  • Cong, Longqing; Xu, Ningning; Gu, Jianqiang
  • Laser & Photonics Reviews, Vol. 8, Issue 4
  • DOI: 10.1002/lpor.201300205

Experimental demonstration of reflectarray antennas at terahertz frequencies
journal, January 2013

  • Niu, Tiaoming; Withayachumnankul, Withawat; Ung, Benjamin S. -Y.
  • Optics Express, Vol. 21, Issue 3
  • DOI: 10.1364/OE.21.002875

Terahertz beam focusing based on plasmonic waveguide scattering
journal, October 2012

  • Monnai, Yasuaki; Altmann, Kristian; Jansen, Christian
  • Applied Physics Letters, Vol. 101, Issue 15
  • DOI: 10.1063/1.4759042

Ultrathin Terahertz Planar Elements
journal, February 2013

  • Hu, Dan; Wang, Xinke; Feng, Shengfei
  • Advanced Optical Materials, Vol. 1, Issue 2
  • DOI: 10.1002/adom.201200044

THz Wave Modulators: A Brief Review on Different Modulation Techniques
journal, November 2012

  • Rahm, Marco; Li, Jiu-Sheng; Padilla, Willie J.
  • Journal of Infrared, Millimeter, and Terahertz Waves, Vol. 34, Issue 1
  • DOI: 10.1007/s10762-012-9946-2

Room-temperature operation of an electrically driven terahertz modulator
journal, May 2004

  • Kleine-Ostmann, T.; Dawson, P.; Pierz, K.
  • Applied Physics Letters, Vol. 84, Issue 18
  • DOI: 10.1063/1.1723689

Active terahertz metamaterial devices
journal, November 2006

  • Chen, Hou-Tong; Padilla, Willie J.; Zide, Joshua M. O.
  • Nature, Vol. 444, Issue 7119, p. 597-600
  • DOI: 10.1038/nature05343

Ultrafast optical switching of terahertz metamaterials fabricated on ErAs/GaAs nanoisland superlattices
journal, January 2007

  • Chen, Hou-Tong; Padilla, Willie J.; Zide, Joshua M. O.
  • Optics Letters, Vol. 32, Issue 12
  • DOI: 10.1364/OL.32.001620

Hybrid metamaterials enable fast electrical modulation of freely propagating terahertz waves
journal, September 2008

  • Chen, Hou-Tong; Palit, Sabarni; Tyler, Talmage
  • Applied Physics Letters, Vol. 93, Issue 9
  • DOI: 10.1063/1.2978071

High-Contrast Terahertz Wave Modulation by Gated Graphene Enhanced by Extraordinary Transmission through Ring Apertures
journal, February 2014

  • Gao, Weilu; Shu, Jie; Reichel, Kimberly
  • Nano Letters, Vol. 14, Issue 3
  • DOI: 10.1021/nl4041274

A metamaterial solid-state terahertz phase modulator
journal, February 2009

  • Chen, Hou-Tong; Padilla, Willie J.; Cich, Michael J.
  • Nature Photonics, Vol. 3, Issue 3, p. 148-151
  • DOI: 10.1038/nphoton.2009.3

An electrically driven terahertz metamaterial diffractive modulator with more than 20 dB of dynamic range
journal, March 2014

  • Karl, N.; Reichel, K.; Chen, H. -T.
  • Applied Physics Letters, Vol. 104, Issue 9
  • DOI: 10.1063/1.4867276

A spatial light modulator for terahertz beams
journal, May 2009

  • Chan, Wai Lam; Chen, Hou-Tong; Taylor, Antoinette J.
  • Applied Physics Letters, Vol. 94, Issue 21
  • DOI: 10.1063/1.3147221

Polarization-independent active metamaterial for high-frequency terahertz modulation
journal, January 2009

  • Paul, Oliver; Imhof, Christian; Lägel, Bert
  • Optics Express, Vol. 17, Issue 2
  • DOI: 10.1364/OE.17.000819

High speed terahertz modulation from metamaterials with embedded high electron mobility transistors
journal, January 2011

  • Shrekenhamer, David; Rout, Saroj; Strikwerda, Andrew C.
  • Optics Express, Vol. 19, Issue 10
  • DOI: 10.1364/OE.19.009968

Liquid Crystal Metamaterial Absorber Spatial Light Modulator for THz Applications
journal, January 2014

  • Savo, Salvatore; Shrekenhamer, David; Padilla, Willie J.
  • Advanced Optical Materials, Vol. 2, Issue 3
  • DOI: 10.1002/adom.201300384

Switchable Scattering Meta-Surfaces for Broadband Terahertz Modulation
journal, July 2014

  • Unlu, M.; Hashemi, M. R.; Berry, C. W.
  • Scientific Reports, Vol. 4, Issue 1
  • DOI: 10.1038/srep05708

Spectrally Wide-Band Terahertz Wave Modulator Based on Optically Tuned Graphene
journal, September 2012

  • Weis, Peter; Garcia-Pomar, Juan L.; Höh, Michael
  • ACS Nano, Vol. 6, Issue 10
  • DOI: 10.1021/nn303392s

Broadband graphene terahertz modulators enabled by intraband transitions
journal, January 2012

  • Sensale-Rodriguez, Berardi; Yan, Rusen; Kelly, Michelle M.
  • Nature Communications, Vol. 3, Issue 1
  • DOI: 10.1038/ncomms1787

Terahertz imaging employing graphene modulator arrays
journal, January 2013

  • Sensale-Rodriguez, Berardi; Rafique, Subrina; Yan, Rusen
  • Optics Express, Vol. 21, Issue 2
  • DOI: 10.1364/OE.21.002324

Dynamical Electric and Magnetic Metamaterial Response at Terahertz Frequencies
journal, March 2006


Experimental demonstration of frequency-agile terahertz metamaterials
journal, April 2008


A metal-to-insulator transition in cut-wire-grid metamaterials in the terahertz region
journal, January 2010

  • Takano, Keisuke; Shibuya, Kyoji; Akiyama, Koichi
  • Journal of Applied Physics, Vol. 107, Issue 2
  • DOI: 10.1063/1.3284958

Extremely Low Frequency Plasmons in Metallic Mesostructures
journal, June 1996

  • Pendry, J. B.; Holden, A. J.; Stewart, W. J.
  • Physical Review Letters, Vol. 76, Issue 25, p. 4773-4776
  • DOI: 10.1103/PhysRevLett.76.4773

Ultrafast manipulation of near field coupling between bright and dark modes in terahertz metamaterial
journal, January 2013

  • Roy Chowdhury, Dibakar; Singh, Ranjan; Taylor, Antoinette J.
  • Applied Physics Letters, Vol. 102, Issue 1
  • DOI: 10.1063/1.4774003

    Works referencing / citing this record:

    Graphene Based Terahertz Light Modulator in Total Internal Reflection Geometry
    journal, December 2016

    • Liu, Xudong; Chen, Zefeng; Parrott, Edward P. J.
    • Advanced Optical Materials, Vol. 5, Issue 3
    • DOI: 10.1002/adom.201600697

    NIR Light Driven Terahertz Wave Modulator with a Large Modulation Depth Based on a Silicon‐PEDOT:PSS‐Perovskite Hybrid System
    journal, April 2020

    • Lai, Weien; Ge, Chengda; Yuan, Hao
    • Advanced Materials Technologies, Vol. 5, Issue 4
    • DOI: 10.1002/admt.201901090

    Dielectrics for Terahertz Metasurfaces: Material Selection and Fabrication Techniques
    journal, September 2019

    • Ako, Rajour Tanyi; Upadhyay, Aditi; Withayachumnankul, Withawat
    • Advanced Optical Materials, Vol. 8, Issue 3
    • DOI: 10.1002/adom.201900750

    High‐efficiency cross and linear‐to‐circular polarization converters based on novel frequency selective surfaces
    journal, June 2019

    • Wang, Zhenglong; Ge, Yuehe; Lin, Chengxiu
    • Microwave and Optical Technology Letters, Vol. 61, Issue 10
    • DOI: 10.1002/mop.31906

    Multilayer Graphene Broadband Terahertz Modulators with Flexible Substrate
    journal, March 2018

    • Kaya, Emine; Kakenov, Nurbek; Altan, Hakan
    • Journal of Infrared, Millimeter, and Terahertz Waves, Vol. 39, Issue 5
    • DOI: 10.1007/s10762-018-0480-8

    A review of metasurfaces: physics and applications
    journal, June 2016