Third-order optical nonlinearity of gold nanoparticle arrays embedded in a BaTiO3 matrix

被引：11

作者：

Ning, Tingyin ^{[1
]}

Chen, Chunchong ^{[2
]}

Zhou, Yueliang ^{[1
]}

Lu, Heng ^{[1
]}

Shen, Hong ^{[1
]}

Zhang, Dongxiang ^{[1
]}

Wang, Pei ^{[2
]}

Ming, Hai ^{[2
]}

Yang, Guozhen ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China

[2] Univ Sci & Technol China, Anhui Key Lab Optoelect Sci & Technol, Hefei 230026, Peoples R China

来源：

APPLIED OPTICS | 2009年 / 48卷 / 02期

基金：

中国国家自然科学基金;

关键词：

THIN-FILMS; PLASMON RESONANCE; COMPOSITE FILMS; ABSORPTION; ENHANCEMENTS; LITHOGRAPHY; SURFACES; FIELDS;

D O I：

10.1364/AO.48.000375

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Au:BaTiO3 composite films comprising hexagon-shaped Au nanoparticle arrays covered with BaTiO3 matrix were fabricated by double-layer nanosphere lithography and pulsed laser deposition technique. The optical nonlinearity of the composite film was determined using the Z-scan technique at a wavelength of 532nm and a pulse duration of 25 ps. The third-order nonlinear optical susceptibility, chi((3)), was found to be 2.9 x 10(-8) esu, which is comparable with the best values in metal-dielectric films comprising randomly distributed spherical particles but with much higher metal concentrations. The local electric field enhancement in and near the particles was investigated using the dipole discrete approximation method. (c) 2009 Optical Society of America

引用

页码：375 / 379

页数：5

共 24 条

[1]

[Anonymous], 1995, OPTICAL PROPERTIES M, DOI DOI 10.1007/978-3-662-09109-8

[2] Gold films deposited over regular arrays of polystyrene nanospheres as highly effective SERS substrates from visible to NIR [J].