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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 16 — Aug. 2, 2010
  • pp: 16353–16359

Geometry-dependent terahertz emission of silicon nanowires

Gyeong Bok Jung, Yong Jae Cho, Yoon Myung, Han Sung Kim, Young Suk Seo, Jeunghee Park, and Chul Kang  »View Author Affiliations


Optics Express, Vol. 18, Issue 16, pp. 16353-16359 (2010)
http://dx.doi.org/10.1364/OE.18.016353


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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 ~9 μm) 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 μm and then almost saturates. Their efficient THz emission is attributed to strong local field enhancement by coherent surface plasmons, with distinctive geometry dependence.

© 2010 OSA

OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(300.6495) Spectroscopy : Spectroscopy, teraherz

ToC Category:
Optics at Surfaces

History
Original Manuscript: April 30, 2010
Revised Manuscript: June 24, 2010
Manuscript Accepted: June 29, 2010
Published: July 20, 2010

Citation
Gyeong Bok Jung, Yong Jae Cho, Yoon Myung, Han Sung Kim, Young Suk Seo, Jeunghee Park, and Chul Kang, "Geometry-dependent terahertz emission of silicon nanowires," Opt. Express 18, 16353-16359 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-16-16353


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