摘要
利用低相干光作为光源的光学相干层析技术是一种新型成像技术。本文利用蒙特－卡罗（Ｍｏｎｔｅ－Ｃａｒｌｏ）模拟计算方法研究了该技术在不同的散射条件下，相干调制信号随散射系数的变化关系，得出了单次散射和多次散射的差别以及它们对成像质量的影响，并进一步讨论了利用单次散射和多次散射信号，提高光学相干层析术图像清晰度和信号强度的方法。还研究了光束半径大小对成像分辨率的影响及变化过程。
Optical coherence
tomography (OCT) using low coherence light as the source is an new technique in the field of
imaging. By the method of Monte Carlo simulation, the coherent signal under different
scattering conditions, the difference between single scattering and multiply scattering and its
influence on imaging are discussed. Farther, we outline a method to utilize the difference to
enhance the image sharpness and signal intensity. The influence of the incident beam diameter
on the imaging resolution is dynamically studied to get a helpful conclusion to the experiment.
出处
《光学学报》
EI
CAS
CSCD
北大核心
1999年第4期486-490,共5页
Acta Optica Sinica
基金
清华大学单原子分子测控研究中心资助课题
清华大学青年基金
关键词
光学相干层析
光散射效应
模拟计算
成像技术
optical coherence tomography, light scattering effect, Monte Carlo simulation.
