Femtosecond Induced Absorption of PbS Nanoparticles Modified by AOT

被引：0
|
作者：
郭林
汪浩
艾希成
杨青林
邹英华
李前树
朱鹤荪
机构：
[1] 北京大学介观物理国家重点实验室
[2] 北京理工大学材料科学研究中心
来源：
Journal of Beijing Institute of Technology(English Edition) | 1999年 / 01期
基金：
高等学校博士学科点专项科研基金;
关键词：
PbS纳米微粒; 气溶胶OT; 超快反饱和吸收; 表面化学修饰;
D O I：
10.15918/j.jbit1004-0579.1999.01.009
中图分类号：
O437 [非线性光学（强光与物质的作用）];
学科分类号：
070207 ; 0803 ;
摘要：
目的制备表面经ＡＯＴ修饰的ＰｂＳ纳米微粒，测定其超快非线性光学特性．方法利用微乳液法制备表面经ＡＯＴ修饰的ＰｂＳ纳米微粒并利用飞秒激光技术研究其超快光学性质．结果观察到超快反饱和吸收过程，弛豫时间约为１００ｆｓ．结论超快反饱和吸收来源于双激子效应和捕获载流子诱导的斯塔克效应，样品表面的化学修饰环境对超快非线性光学性质有很大的影响．
引用
收藏
页码：49 / 55
页数：7
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