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Proceedings Paper

Relationship of second order susceptibility to the dimensions of ZnO nanorods based on Lorentz local field
Author(s): Guan-Yu Zhuo; Kuo-Jen Hsu; Tung-Yu Su; Nan-Hsun Huang; Yang-Fang Chen; Shi-Wei Chu
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Paper Abstract

With the aid of Maker fringe technique, we have observed two nonlinear optical (NLO) phenomena separately on diameter and length of ZnO nanorod (NR). One is second harmonic generation (SHG) saturation in rod diameter, and the other is SHG enhancement in rod length. Besides that, the model based on Lorentz local field is proposed for the first time to elucidate the above phenomena. The deduced second order susceptibility χ(2) with various sizes of ZnO NR matches well to our theory, demonstrating that the size effect on χ(2) is governed by Lorentz local field. Our theory provides a theoretical basis to explain the mechanism of light-material interaction in nano-dimensions and is readily to be extended to other kind of semiconductor nanostructures when addressing NLO properties in them.

Paper Details

Date Published: 20 February 2012
PDF: 6 pages
Proc. SPIE 8260, Ultrafast Phenomena and Nanophotonics XVI, 82600C (20 February 2012); doi: 10.1117/12.908377
Show Author Affiliations
Guan-Yu Zhuo, National Taiwan Univ. (Taiwan)
Kuo-Jen Hsu, National Taiwan Univ. (Taiwan)
Tung-Yu Su, National Taiwan Univ. (Taiwan)
Nan-Hsun Huang, National Taiwan Univ. (Taiwan)
Yang-Fang Chen, National Taiwan Univ. (Taiwan)
Shi-Wei Chu, National Taiwan Univ. (Taiwan)

Published in SPIE Proceedings Vol. 8260:
Ultrafast Phenomena and Nanophotonics XVI
Markus Betz; Abdulhakem Y. Elezzabi; Jin-Joo Song; Kong-Thon Tsen, Editor(s)

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