INSTRUMENTATION FOR COHERENT DETECTION IN TURBID MEDIA

我们已经使用新开发的设置进行了实验 研究散射介质中相干的保持性。此设置 使用150个来自Ar离子泵浦模式的飞秒激发脉冲 锁定钛宝石激光系统。光通过一个 由聚苯乙烯微球混合组成的散射样品 略微倾斜(0-20mrad)的参考光束。我们找到了 光子对相干信号的相对贡献 散布1、2、3次等。这项工作在 黏膜亚表层结构成像系统的开发 纸巾。

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.