Geometry-dependent terahertz emission of silicon nanowires
- Authors
- Jung, Gyeong Bok; Cho, Yong Jae; Myung, Yoon; Kim, Han Sung; Seo, Young Suk; Park, Jeunghee; Kang, Chul
- Issue Date
- 2-8월-2010
- Publisher
- OPTICAL SOC AMER
- Citation
- OPTICS EXPRESS, v.18, no.16, pp.16353 - 16359
- Indexed
- SCIE
SCOPUS
- Journal Title
- OPTICS EXPRESS
- Volume
- 18
- Number
- 16
- Start Page
- 16353
- End Page
- 16359
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/115899
- DOI
- 10.1364/OE.18.016353
- ISSN
- 1094-4087
- Abstract
- 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 similar to 9 mu m) 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 mu m and then almost saturates. Their efficient THz emission is attributed to strong local field enhancement by coherent surface plasmons, with distinctive geometry dependence. (C) 2010 Optical Society of America
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Collections - Graduate School > Department of Advanced Materials Chemistry > 1. Journal Articles
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