Cited by 102Terahertz technology and applicationsLaser-Matter Interactions and ApplicationsGraphene research and applications

Generation of Terahertz Radiation by Optical Excitation of Aligned Carbon Nanotubes

Titova, Lyubov V., Pint, Cary L., Zhang, Qi, Hauge, Robert H., Kono, Junichiro, Hegmann, Frank A.·2015·Nano Letters

Abstract

We have generated coherent pulses of terahertz radiation from macroscopic arrays of aligned single-wall carbon nanotubes (SWCNTs) excited by femtosecond optical pulses without externally applied bias. The generated terahertz radiation is polarized along the SWCNT alignment direction. We propose that top-bottom asymmetry in the SWCNT arrays produces a built-in electric field in semiconducting SWCNTs, which enables generation of polarized terahertz radiation by a transient photocurrent surge directed along the nanotube axis.

Integrity signals

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Crossref · 10.1021/acs.nanolett.5b00494

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44 of 44 references verified0 citation errors · 0 not checkable

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  • THz emission studies have indicated that variation in spatial ordering across different regions of a carbon nanotube array can break symmetry, leading to nonzero drift currents.

    “However, THz emission studies have indicated that variation in spatial ordering across different regions of an array can break this symmetry, leading to nonzero drift currents227.”

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Authors
Titova, L. V., Pint, C. L., Zhang, Q., Hauge, R. H., Kono, J., & Hegmann, F. A.
Affiliations
  • Worcester Polytechnic Institute (US)
  • Vanderbilt University (US)
  • University of Alberta (CA)
Venue
Nano Letters
Published
2015-04-20
Volume
15
Issue
5
Pages
3267-3272
ISSN
  • 1530-6984 (ISSN-L)
  • 1530-6992
OpenAlex
W2334689112
Cited by
102
References
44
Citations by year
2026: 2 · 2025: 5 · 2024: 8 · 2023: 8 · 2022: 16 · 2021: 7 · 2020: 8 · 2019: 13 · 2018: 10 · 2017: 10 · 2016: 14 · 2015: 1
FWCI
5.63
Type
journal article
Language
en
Open access
closed
Locations
  • Nano Letters (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Welch Foundation (C-1509)
  • Basic Energy Sciences (DE-FG02-06ER46308)
  • Natural Sciences and Engineering Research Council of Canada
  • Alberta Innovates - Technology Futures
  • Canada Foundation for Innovation
  • Centre for Interdisciplinary Nanoscience
Topics
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Terahertz technology and applications
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Laser-Matter Interactions and Applications
  • Physical Sciences › Materials Science › Materials Chemistry › Graphene research and applications
Keywords
terahertz generation, single-walled carbon nanotubes, aligned carbon nanotube arrays, femtosecond optical excitation, built-in electric field, transient photocurrent

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