Large third-order optical nonlinearity in BaTiO3 matrix-embedded metal nanoparticles

被引：13
作者：
Wang, WT
Qu, LS
Yang, G
Chen, ZG
机构：
[1] Chinese Acad Sci, Inst Phys, Lab Opt Phys, Beijing 100080, Peoples R China
[2] Chinese Acad Sci, Ctr Condensed Matter Phys, Beijing 100080, Peoples R China
[3] Naval Engn Coll Aeronaut, Yantai 264001, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2003年 / 218卷 / 1-4期
基金：
中国国家自然科学基金;
关键词：
Au : BaTiO3 films; optical nonlinearity; pulsed laser deposition; z-scan;
D O I：
10.1016/S0169-4332(03)00587-7
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Composite films consisting of nanoscale Au particles uniformly embedded in barium. titanate (BaTiO3) matrices (Au:BaTiO3) were prepared by alternate ablation of metallic Au and ceramic BaTiO3 targets using pulsed laser deposition (PLD) technique. Average diameters of the Au particles were in the range of 2-3 nm. The third-order optical nonlinearity of the composite films was investigated using the z-scan method at the wavelength of 532 nm with a laser duration of 10 ns. The nonlinear refractive index n(2) and the nonlinear absorption coefficient beta (m/W) were determined to be -2.42 x 10(-6) esu and 2.22 x 10(-6) m/W respectively. (C) 2003 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：24 / 28
页数：5
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