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Title: Broadband terahertz generation of metamaterials

Abstract

Provided are systems and methods to generate single-cycle THz pulses from a few tens of nanometers thin layer of split ring resonators (SRRs) via optical rectification of femtosecond laser pulses. The emitted THz radiation, with a spectrum ranging from about 0.1 to 4 THz, arises exclusively from pumping the magnetic-dipole resonance of SRRs around 200 THz. This resonant enhancement, together with pump polarization dependence and power scaling of the THz emission, underpins the nonlinearity from optically induced circulating currents in SRRs, with a huge effective nonlinear susceptibility of 0.8.times.10.sup.-16 m.sup.2/V that far exceeds surface nonlinearities of both thin films and bulk organic/inorganic crystals and sheet nonlinearities of non-centrosymmetric materials such as ZnTe.

Inventors:
; ; ; ;
Publication Date:
Research Org.:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1364589
Patent Number(s):
9,684,221
Application Number:
14/989,565
Assignee:
Iowa State University Research Foundation, Inc. AMES
DOE Contract Number:  
ACO2-07CH11358
Resource Type:
Patent
Resource Relation:
Patent File Date: 2016 Jan 06
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Luo, Liang, Wang, Jigang, Koschny, Thomas, Wegener, Martin, and Soukoulis, Costas M. Broadband terahertz generation of metamaterials. United States: N. p., 2017. Web.
Luo, Liang, Wang, Jigang, Koschny, Thomas, Wegener, Martin, & Soukoulis, Costas M. Broadband terahertz generation of metamaterials. United States.
Luo, Liang, Wang, Jigang, Koschny, Thomas, Wegener, Martin, and Soukoulis, Costas M. Tue . "Broadband terahertz generation of metamaterials". United States. doi:. https://www.osti.gov/servlets/purl/1364589.
@article{osti_1364589,
title = {Broadband terahertz generation of metamaterials},
author = {Luo, Liang and Wang, Jigang and Koschny, Thomas and Wegener, Martin and Soukoulis, Costas M.},
abstractNote = {Provided are systems and methods to generate single-cycle THz pulses from a few tens of nanometers thin layer of split ring resonators (SRRs) via optical rectification of femtosecond laser pulses. The emitted THz radiation, with a spectrum ranging from about 0.1 to 4 THz, arises exclusively from pumping the magnetic-dipole resonance of SRRs around 200 THz. This resonant enhancement, together with pump polarization dependence and power scaling of the THz emission, underpins the nonlinearity from optically induced circulating currents in SRRs, with a huge effective nonlinear susceptibility of 0.8.times.10.sup.-16 m.sup.2/V that far exceeds surface nonlinearities of both thin films and bulk organic/inorganic crystals and sheet nonlinearities of non-centrosymmetric materials such as ZnTe.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jun 20 00:00:00 EDT 2017},
month = {Tue Jun 20 00:00:00 EDT 2017}
}

Patent:

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Works referenced in this record:

Broadband terahertz generation from metamaterials
journal, January 2014

  • Luo, Liang; Chatzakis, Ioannis; Wang, Jigang
  • Nature Communications, Vol. 5, Article No. 3055
  • DOI: 10.1038/ncomms4055