提出全光非接触光声层析成像(ncPAT)与光学相干层析(OCT)双模成像的新方法，用于同时获取物体的吸收分布图像和散射分布图像。搭建ncPAT-OCT 双模成像系统，采用同一探测光源、同一干涉系统用于提高系统稳定性；采用同步触发模式来确保双模成像在数据采集时间上的同步性；使用共同样品臂来保证采样区域在空间上的一致性。并在此基础上实现同时对同一个样品进行PAT 和OCT 两种模式成像，实验结果表明两种模式成像能够很好地匹配，而且可以在不同模式下获得不同的信息。

University, Guangzhou, Guangdong 510006, China Abstract A new dual-mode imaging method of all-optical non-contact photoacoustic tomography (ncPAT) imaging and optical coherence tomography (OCT) is presented to get absorption and scattering of sample simultaneously. An all-optical ncPAT-OCT dual-model imaging system is built. The same probe light and the same interferometer system are used to improve the stability of system. Synchronous trigger mode is utilized to ensure the data acquisition at the same time, and a common sample arm is employed to ensure the sampling region in the same space. On the basis of these, the images of PAT and OCT are achieved at the same time for the same sample. Experimental results show that the two-mode imaging can be a good match, and it can get different information in different modes.