准均匀介质散射光波的强度相关性研究

项目名称： 准均匀介质散射光波的强度相关性研究

项目编号： No.61205121

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 信息四处

项目作者： 李伽

作者单位： 浙江工业大学

项目金额： 28万元

中文摘要： 准均匀介质的光波散射目前已成为精密光学、微纳光子学等前沿学科的共性、基础性研究，其成果促进了目标探测、光信号处理、生物医学等领域的迅速发展。目前在开展这些应用时遇到的理论困难主要集中在对散射强度相关性及光强涨落现象缺乏系统、规律性的研究。其中，从本质上明确散射强度涨落现象产生、变化以及湮灭的根本机理是解决问题的关键环节。本项目将从光强高阶相关这一事实入手对该环节进行深入探究：(1)基于理论及实验方法多角度探索散射强度涨落现象产生的根本机理，建立一种用于揭示该类相关性演化规律的可视化软件；(2)从多参量调制角度明确散射强度相关性、介质空间相关性及散射像对比度三者间的关联机制；(3)构建一套以散射强度相关函数为研究对象的实验测量方法，有望突破现有强度逆散射探测法的局限性，实现对介质散射势强度参量的获取。以上研究拓展了从光波强度相关这一本质层面为赝热光散射成像等提供理论依据和应用价值。

中文关键词： 随机介质；相干性；强度涨落；散射势；

英文摘要： The study on characteristics of light scattered from quasi-homogeneous (QH) medium has become a collective and fundamental research for the leading subjects such as the precise optics and nano photonics. The corresponding achievements have rapidly promoted the developments of various fields such as the objective detection, optical signal processing and biomedicine. So far, the theoretical difficulty for the implement of these applications mainly concentrate on the lack of the systematic and regular knowledge of intensity correlations and intensity fluctuations of scattered field. Among these prolem, how to definite the fundamental mechanism for the emergence, variation and annihilation of intensity fluctuations of scattered field can be regarded as the most essential point for the solution of the problem. This project intents to deeply study this point according to the fact, namely the high-order intensity correlations:(1)Investigate the fundamental mechanism for the emergence of intensity correlations of scattered field separately from the theoretical and experimental point of view, establish a visible software whose function is to reveal the evolutive properties of intensity correlation；(2)definite the relationships between intensity correlations of scattered field, spatial correlations of medium and the visib

英文关键词： Random medium；Coherence；Intensty fluctuation；Scattering potential；