多波长光源提高关联成像的成像质量  

Improve Quality of Ghost Imaging with Multi-Wavelength Source

作　　者：杨旭[1] 张勇[1] 杨成华[1] 徐璐[1] 王强[1] 刘越豪 赵远[1] 

机构地区：[1]哈尔滨工业大学物理系,黑龙江哈尔滨150001

出　　处：《中国激光》2016年第3期238-243,共6页Chinese Journal of Lasers

基　　金：国家自然科学基金青年基金(61108072)

摘　　要：关联成像的成像机制决定了其成像需要进行大量的测量,测量次数越多成像质量越好,但成像时间较长。为此提出多波长光源关联成像系统,能够从系统结构的角度来降低关联成像的成像时间,每一个波长的光所对应的探测器并行地进行关联成像的测量。通过实验证明:当光源包含三个波长光时,相同时间内对同一目标进行成像,相比传统的单波长关联系统,关联成像的对比度提高36%,衬噪比提高66%。The imaging mechanism of ghost imaging determines that it needs a large number of measurement, measuring the more the better imaging quality, but the longer imaging time. Therefore, multi-wavelength ghost imaging system is proposed, it can reduce imaging time through changing system composition, since different detectors measure different wavelength intensities simultaneously. Experimental results indicate that when light source with three wavelengths is used to imaging the target at the same time, the contrast ratio improves by 36% and the carrier noise ratio improves by 66% , comparing with conventional ghost imaging system with single wavelength.

关 键 词：成像系统 关联成像 多波长 衬噪比 对比度 

分 类 号：O439[机械工程—光学工程]