Geometry-dependent terahertz emission of silicon nanowires
Open accessAbstract
THz emission was observed from the vertically aligned silicon nanowire (Si NW) arrays, upon the excitation using a fs Ti-sapphire laser pulse (800 nm). The Si NWs (length = 0.3 approximately 9 microm) were synthesized by the chemical etching of n-type silicon substrates. The THz emission exhibits significant length dependence; the intensity increases sharply up to a length of 3 mum and then almost saturates. Their efficient THz emission is attributed to strong local field enhancement by coherent surface plasmons, with distinctive geometry dependence.
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Impulsive THz plasmonic excitations have been shown to enhance THz radiation from Si and InAs nanowires.
“Impulsive THz plasmonic excitations have also been shown to enhance the THz radiation from Si225 and InAs223 nanowires.”
From Ultrafast terahertz emission from emerging symmetry-broken materials (2023) · cites this paper as [225]
An isolated nanowire behaves as an excellent Hertzian dipole.
“By contrast, an isolated nanowire behaves as an excellent Hertzian dipole223,225 (Fig. 10a).”
From Ultrafast terahertz emission from emerging symmetry-broken materials (2023) · cites this paper as [225]
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- Authors
- Jung, G. B., Cho, Y. J., Myung, Y., Kim, H. S., Seo, Y. S., Park, J., & Kang, C.
- Affiliations
- Korea University (KR)
- Venue
- Optics Express
- Publisher
- Optica Publishing Group
- Published
- 2010-07-20
- Volume
- 18
- Issue
- 16
- Pages
- 16353
- ISSN
- 1094-4087 (ISSN-L)
- OpenAlex
- W1979861958
- Cited by
- 48
- References
- 22
- Citations by year
- 2026: 1 · 2025: 1 · 2023: 2 · 2022: 1 · 2021: 3 · 2020: 1 · 2019: 1 · 2017: 7 · 2016: 3 · 2015: 8 · 2014: 2 · 2013: 7 · 2012: 5
- FWCI
- 4.53
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Locations
- Optics Express (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Pohang University of Science and Technology
- Iran Telecommunication Research Center
- Topics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Terahertz technology and applications
- Physical Sciences › Engineering › Biomedical Engineering › Nanowire Synthesis and Applications
- Physical Sciences › Engineering › Biomedical Engineering › Plasmonic and Surface Plasmon Research
- Keywords
- terahertz emission, silicon nanowires, vertically aligned nanowire arrays, nanowire length dependence, local field enhancement, femtosecond laser excitation, chemical etching, n-type silicon substrate
- MeSH terms
- Crystallization, Materials Testing, Silicon, Surface Properties, Nanotechnology, Nanowires
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Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
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