飞秒互相关时间选通技术用于光学层析成像的实验研究  

Imaging Towards Optical Coherent Tomography Using Femtosecond Second Harmonic Generation Cross Correlation Time Gating

作　　者：张伟力[1] 邢岐荣[1] 陈野 孙涛[1] 郑学梅[1] 王清月[1] 

机构地区：[1]天津大学精仪学院超快激光研究室

出　　处：《光学学报》1997年第12期1624-1629,共6页Acta Optica Sinica

基　　金：国家攀登计划;天津市自然科学基金

摘　　要：利用飞秒互相关二次谐波信号时间选通技术，实现了对埋藏在高度散射介质中物体的透射成像和反射层析成像。互相关时间选通门有效地选出了携带物体信息的弹道光子和蛇行光子，排除了给成像带来背景噪声的漫射光子，分别获得了散射介质中物体的二次谐波一维和二维图像。A femtosecond time gating of cross correlation second harmonic generation is shown to be a versatile technique to image objects through various highly scattering medium, and optical coherent tomography (OCT) is achieved preliminarily. The ballistic and snake pulse component, that contain the information of the objects are effectively selected, while the diffuse component which contributes bright background noise to the image is eliminated by time gating of femtosecond cross correlation second harmonic generation. The SHG one dimensioanl and two dimensional pictures of objects hidden in highly scattering medium are recorded, respectively.

关 键 词：飞秒互相关 时间选通 光学层析成像 散射 

分 类 号：O438[机械工程—光学工程]