Enhanced optical nonlinearity near the photonic bandgap edges of a cholesteric liquid crystal

被引：35
作者：
Hwang, J [1 ]
Ha, NY
Chang, HJ
Park, B
Wu, JW
机构：
[1] Ewha Womans Univ, Dept Phys, Seoul 120750, South Korea
[2] Hanyang Univ, Quantum Photon Sci Res Ctr, Seoul 133791, South Korea
[3] Hanyang Univ, Dept Phys, Seoul 133791, South Korea
来源：
OPTICS LETTERS | 2004年 / 29卷 / 22期
关键词：
D O I：
10.1364/OL.29.002644
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The third-order Kerr nonlinear optical effect of a one-dimensional photonic bandgap structure of a cholesteric liquid crystal is investigated. In a femtosecond nonlinear transmission measurement, nonlinear optical changes in the bandgap edges are observed. From analysis of the dispersion relation, Kerr nonlinear coefficients of nematics, forming the cholesteric liquid crystal, are found to be enhanced by 1-2 orders of magnitude through the photonic bandgap structure. (C) 2004 Optical Society of America.
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页码：2644 / 2646
页数：3
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