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首页> 外文期刊>High Technology Letters >Studies of Optical Nonlinearity Behaviors of Ultrafine PbS Particles in Perfluorocarboxylated Cation-exchanged Films
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Studies of Optical Nonlinearity Behaviors of Ultrafine PbS Particles in Perfluorocarboxylated Cation-exchanged Films

机译：全氟羧化阳离子交换膜中超细PbS颗粒的光学非线性行为研究

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摘要

Ultrafine PbS particles with different sizes have been prepared in perfluorocarboxylated cation-exchanged films. The variation of PbS particle size was clarified by absorption spectra and TEM graphs. Time-resolved optical Kerr effects were measured by femisecond pump-probe techniques. Optical Kerr effect response time was estimated to be less than 165 fs. A third-order optical nonlinearity of χ~((3))～10(-12)esu for PbS particles was obtained and it was found that it increases with the decrease of particle sizes, showing the influence of quantum confined effect on optical nonlinear behavious of ultrafine particles.
机译：已经在全氟羧化阳离子交换膜中制备了具有不同尺寸的超细PbS颗粒。通过吸收光谱和TEM图阐明了PbS粒径的变化。时间分辨的光学克尔效应通过飞秒泵浦探针技术测量。光学Kerr效应响应时间估计小于165 fs。获得了PbS粒子的χ〜（（3））〜10（-12）esu的三阶光学非线性，发现随着粒子尺寸的减小而增大，表明量子约束效应对光学非线性的影响。行为超细颗粒。

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