Optical and electrical Kerr effects in polydiacetylene nanoparticle submonolayer probed by surface plasmon resonance spectroscopy
Optical and electrical Kerr effects in polydiacetylene nanoparticle submonolayer probed by surface plasmon resonance spectroscopy
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表面等离子体共振光谱探测聚二乙炔纳米颗粒亚单层中的光学和电学克尔效应
DOI：
10.1088/0022-3727/45/23/235105
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
M. Shimojo and K. Kajikawa
中科院分区：
文献类型：
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作者：
O. Kuraishi;D. Tanaka;M. Shimojo and K. Kajikawa
研究了聚二乙炔（PDA）纳米粒子（NP）在金基底上形成的亚单层膜的光、电克尔效应。在1064 nm的非共振波长下，PDA NP的三阶非线性系数为χ（3）=（− 7.6+ 6.6 i）× 10− 9 esu（光学克尔效应）和χ（3）=（− 1.2+ 0.39 i）× 10− 9 esu（电学克尔效应），这比报道的值大一个数量级。在衰减全反射几何结构中，我们观察到在9.3MW cm-2的照明强度下5%的反射率变化，这是基于光学克尔效应的0.001的折射率变化的结果。结果表明，PDA纳米粒子是一种很有前途的光开关材料。
Optical and electrical Kerr effects in a polydiacetylene (PDA) nanoparticle (NP) submonolayer film formed on a gold substrate were investigated. The third-order nonlinear susceptibilities of the PDA NPs at an off-resonance wavelength of 1064 nm were χ (3)=(− 7.6+ 6.6 i)× 10− 9 esu (optical Kerr effect) and χ (3)=(− 1.2+ 0.39 i)× 10− 9 esu (electrical Kerr effect), which are an order of magnitude larger than the value reported. We observed a reflectivity change of 5% with an illumination intensity of 9.3 MW cm− 2 in the attenuated total reflection geometry, as a result of the refractive index change of 0.001 on the basis of the optical Kerr effect. The results indicate that the PDA NPs are promising materials for optical switching using plasmonic waveguides.