INSTRUMENTATION FOR COHERENT DETECTION IN TURBID MEDIA

浑浊介质中的相干检测仪器

• 批准号: 6314216
• 负责人: CHANGHUEI YANG
• 金额: $ 1.38万
• 依托单位: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
• 依托单位国家: 美国
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-06-01 至 2001-05-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6314216
• 关键词: bioengineering /biomedical engineering; biomedical resource; human tissue; lasers; technology /technique

We have conducted experiments using a newly developed setup for studying preservation of coherence in scattering media. This setup uses 150 femtosecond excitation pulses from Argon ion pumped mode locked Ti:sapphire laser system. Light is delivered through a scattering sample composed of polystyrene microspheres and mixed with a slightly tilted (0-20 mrad) reference beam. We were able to find relative contribution in coherent signal from photons that were scattered 1, 2, 3 etc times. This work can be of importance in developing system for imaging sub-surface structures in mucosal tissues.

我们使用新开发的装置进行了实验 研究散射介质中相干性的保持。 这个设置 使用来自氩离子泵浦模式的 150 飞秒激发脉冲 锁定钛：蓝宝石激光系统。 光是通过一个 散射样品由聚苯乙烯微球组成并与 稍微倾斜（0​​-20 mrad）的参考光束。 我们能够找到 光子对相干信号的相对贡献 分散 1、2、3 等次。 这项工作可能很重要 开发粘膜下表面结构成像系统 组织。