Dynamics of Resonant Third-Order Nonlinear Optical Processesin Molecular Solids and Polymers

分子固体和聚合物中共振三阶非线性光学过程的动力学

• 批准号: 9022017
• 负责人: Paras Prasad
• 金额: $ 30万
• 依托单位: SUNY at Buffalo
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-04-01 至 1995-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9022017&HistoricalAwards=false
• 关键词: Dynamics; Resonant; Third; Order; Nonlinear

This project is aimed at determining the dynamics of third-order nonlinear optical processes in molecular and polymeric materials. Research to be undertaken will include: degenerate four-wave mixing and two-wave mixing pump-probe experiments using amplified 60 femtosecond pulses; investigating the role of two-photon absorption, bimolecular decay, and excitation saturation by simultaneously monitoring both first-order and higher-order diffractions during degenerate four-wave mixing; observing the relative roles of initially photogenerated excitons and subsequently formed polarons in determining optical nonlinearity in linear conjugated structures.

本项目旨在确定三阶动力学 分子和聚合物材料中的非线性光学过程。 将进行的研究将包括：简并四波 利用放大器的混频和二波混频泵浦探测实验 60飞秒脉冲;研究双光子的作用 吸收、双分子衰减和激发饱和， 同时监测一阶和高阶 简并四波混频期间的衍射;观察 最初光生激子的相对作用， 随后形成的极化子在确定光学非线性， 线性共轭结构。