Third-order nonlinear optical properties of gold nanoshells in aqueous solution

被引：0
|
作者：
D.J. Wu
X.J. Liu
L.L. Liu
W.P. Qian
机构：
[1] Nanjing University,Department of Electronic Science and Engineering, Key Lab of Modern Acoustics of MOE
[2] Jiangsu University,Faculty of Science
[3] Southeast University,State Key Laboratory of Bioelectronics
来源：
Applied Physics A | 2008年 / 92卷
关键词：
Surface Plasmon Resonance; Silica Sphere; Small Volume Fraction; Chloroauric Acid; Nonlinear Refraction;
D O I：
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学科分类号：
摘要：
The third-order nonlinear optical properties of gold nanoshells in aqueous solution have been investigated by using open- and closed-aperture Z-scan methods. The real and imaginary third-order nonlinear susceptibilities are obtained to be about -1.1422×10-13 and -2.4302×10-14 esu, respectively. We further have investigated the electric field enhancement for gold nanoshells in aqueous solution by means of a finite-element method and ascribed the small third-order nonlinear susceptibility to the smaller volume fraction and local field factor.
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