反射式水下量子成像  

Reflective Underwater Ghost Imaging

作　　者：项青[1] 杨克成[1] 于龙[1] 夏珉[1] 李微[1] 郭文平[1] 

机构地区：[1]华中科技大学光学与电子信息学院,湖北武汉430074

出　　处：《光学学报》2015年第7期127-132,共6页Acta Optica Sinica

摘　　要：水下成像的成像质量受到激光功率和接收器灵敏度的制约,现有的量子成像方式在自由空间中能够获得较传统成像距离更远、清晰度更高的探测图像。结合自由空间中量子成像方式与水体自身特点,提出了赝热光二维二阶关联的反射式水下量子成像方法,通过选取水下成像系统的典型参量进行模拟计算,重构了物体的光强起伏图像,设计并实现了成像实验。实验结果与数值仿真一致,表明可以利用二阶光强度关联的量子成像方式重现水下物体的二维图像。The quality of underwater imaging is restricted by laser power and receiver sensitivity. Existing ghost imaging method in free space can get higher resolution than traditional imaging detection. Based on theory of statistical optics and underwater optical properties, a two dimensional reflective underwater ghost imaging method using pseudothermal light source is presented,a theoretical model is built to simulate the dynamic process of pseudothermal field variation and the optical fields modulation by target, and the light intensity fluctuate image of target is rebuilt. Experiment results agree well with the results of numerical simulations indicating that reflective ghost imaging pattern can be applied to underwater imaging.

关 键 词：统计光学 水下成像 数值模拟 后向散射 赝热光 

分 类 号：O431.2[机械工程—光学工程]