1300nm光学层析成像  

OCT System Using 1 300 nm Light Source

作　　者：王新宇[1] 张春平[1] 张连顺[1] 薛玲玲[1] 田建国[1] 

机构地区：[1]南开大学光子学中心,天津300071

出　　处：《光电子．激光》2001年第5期500-502,509,共4页Journal of Optoelectronics·Laser

基　　金：天津市自然科学基金!资助项目 ( 973 610 3 11);教育部科学技术研究重点项目!资助 ( 990 19)

摘　　要：利用光学相干层析 (OCT)技术 ,可以透过混沌介质 ,特别是生物组织成像。本文介绍了我们建立的基于 130 0 nm波长稳定化光源的 OCT实验装置 ,并且该装置测量了金属丝样品在奶粉溶液和土豆片两种混沌介质的一维和二维成像情况。该装置具有 2 0 μm的横向分辨率和 2 6 μm的轴向分辨率 ,并给出由 OCT信号重建的灰度图。Using optical coherence tomography (OCT) technology,imaging through turbid media,especially bio tissue becomes possible.We setup an OCT system which uses 1 300 nm low coherence light source.Researches on this waelength are very attractive because light near this region will probably be scattered and absorbed very little by bio tissue.Using this system,we measured the OCT signals of two wires in milk and behind a slice of potato.Then we reconstructed corresponding gray scale maps from the OCT signals.The qualities of the images are satisfying.Our system has the resolution of 20 μm (transversal) and 26 μm (axial) to depth of 1.2 mm.Some advices on how to improve the resolution are also given.

关 键 词：光学相干层析 低相干光 混沌介质 

分 类 号：O43[机械工程—光学工程]