高等学校化学学报2012，Vol.33Issue(1)：149-152,4.DOI:10.3969/j.issn.0251-0790.2012.01.025
不同形态银纳米粒子的非线性光学特性
Nonlinear Optical Properties of Silver Nanocrystals with Different Shapes
摘要
Abstract
Silver nanocrystals with prism and disk shapes have been synthesized by the light-driven growth method in an aqueous solution. Nonlinear optical properties of these two samples were investigated by home-built femtosecond Z-scan system with 800 nm incident wavelength. The Ag nanoprisms with 75 nm size show 700 nm SPR peak and exhibit both negative and positive nonlinear absorption. The nonlinear absorption process is considered to be generated by ground-state plasmon bleaching, free-carrier absorption, and inter-band transitions. The Ag nanodisks with 35 nm size show 495 nm SPR peak. However, Ag nanodisks display only positive nonlinear absorption process. The different nonlinear absorption process is attributed to the morphology influence by the Ag nanocrystals.关键词
飞秒Z-scan技术/银纳米粒子/非线性吸收Key words
Femtosecond Z-scan technology/ Silver nanocrystal/ Nonlinear absorption分类
化学化工引用本文复制引用
王睿,潘凌云,夏晓东,韩丹翱,齐霁,杨罕..不同形态银纳米粒子的非线性光学特性[J].高等学校化学学报,2012,33(1):149-152,4.基金项目
国家自然科学基金(批准号:61077002)和超分子结构与材料国家重点实验室(吉林大学)开放基金(批准号:SKLSSM201125)资助. （批准号:61077002）
