摘要
用皮秒ＮｄＹＡＧ激光器的倍频光（５３２ｎｍ），对具有离域π－共轭电子云结构的偶氮苯类样品材料作简并四波混频实验，测得三阶非线性电极化率χ（３）和它们的时间响应分别为１０－９ｅｓｕ和２０ｐｓ。
The 3rd order nonlinear susceptibility χ (3) and response time of the azobenzene π conjugated derivatives are measured with the four wave mixing technique and picosecond frequency doubled Nd∶YAG laser (532 nm). The measured χ (3) and response time are 10 -9 esu and 20 ps, respectively. The mechanism of transient grating effect and response time are discussed.
出处
《光学学报》
EI
CAS
CSCD
北大核心
1998年第10期1290-1294,共5页
Acta Optica Sinica
基金
国家教委专项基金
关键词
偶氮苯衍生物
三阶非线性
四波混频
有机分子
azobenzene, third order nonlinearity, four wave mixing, delocalized π conjugated organic molecules, response time.
