量子光学学报, 2015, 21 (1): 9, 网络出版: 2015-04-14
毛玻璃转速对热光鬼成像质量的影响
The Influence of Rotational Speed of Ground-glass on the Quality of Ghost Imaging with Thermal Light
鬼成像 毛玻璃转速 散斑 衬噪比 ghost imaging rotational speed of ground-glass speckle field contrast-to-noise ratio
摘要
本文实验研究毛玻璃转速对鬼成像质量的影响.毛玻璃的转速增加使得散斑的涨落增快,这时散斑场的关联时间减少,到达CCD探测器的散斑场分布开始变得模糊,相当于探测器响应速度变慢,这时不同毛玻璃转速下关联图像的衬噪比基本不变.实验结果表明,当增加毛玻璃转速,即便这时候探测器获得的散斑场分布开始变得模糊,鬼成像的质量不会随之变化.
Abstract
In this paper,we experimentally studied how the rotational speed of ground-glass influences the quality of thermal ghost imaging.As the rotational speed of ground-glass increased,the dynamic speckles fluctuate faster,which reduced the coherence time of the speckle field,and the speckle pattern obtained by a CCD detector blurs.Yet,the contrast to noise ratio of the ghost image was virtually irrelevant to the rotational speed of ground-glass.Our experimental result showed that the quality of the ghost image did not degrade even when ground-glass rotates so fast that the blurred speckle pattern appears in CCD detector.
王森, 李洪国, 张德建, 赵秋丽, 王海波, 熊俊, 汪凯戈. 毛玻璃转速对热光鬼成像质量的影响[J]. 量子光学学报, 2015, 21(1): 9. WANG Sen, LI Hong-guo, ZHANG De-jian, ZHAO Qiu-li, WANG Hai-bo, XIONG Jun, WANG Kai-ge. The Influence of Rotational Speed of Ground-glass on the Quality of Ghost Imaging with Thermal Light[J]. Acta Sinica Quantum Optica, 2015, 21(1): 9.