从相敏相干性到超聚束的二阶干涉  

From phase-sensitive coherence to super-bunching second-order interference

作　　者：门雪娇 叶志远 赵迹伦 丁晨鑫 赵鑫媛 侯婉婷 王海波[1] 熊俊[1] MEN Xuejiao;YE Zhiyuan;ZHAO Jilun;DING Chenxin;ZHAO Xinyuan;HOU Wanting;WANG Haibo;XIONG Jun(Applied Optics Beijing Area Major Laboratory,Department of Physics,Beijing Normal University,100875,Beijing,China)

机构地区：[1]北京师范大学物理学系,应用光学北京市重点实验室,北京100875

出　　处：《北京师范大学学报（自然科学版）》2023年第6期934-943,共10页Journal of Beijing Normal University(Natural Science)

基　　金：国家自然科学基金资助项目(12274037,11654003)。

摘　　要：基于傅里叶变换的共轭对称性,通过操控光场的空间相位分布而产生一种新型的相敏对称热光,它具有空间对称位置振幅相同、相位反相关的特点.这种相敏对称热光自身依然体现出热光所具有的聚束效应(其关联系数的峰值为2),而在二阶干涉实验中会产生反常的空间超聚束效应,其理论峰值为3.对比赝热光等其他光源,相敏对称热光的超聚束效应可以突破二阶干涉条纹的可见度上限,从原始的1/3提升至1/2.对上述特性我们进行了实验验证,揭示了相敏相干性和超聚束关联之间的紧密联系,利用这类光源可以提升基于强度关联测量的图像可见度,同时也提供了一种产生超聚束热光的新手段.Here conjugate symmetry of Fourier transform is applied to the production of a novel phase-sensitive symmetric pseudo-thermal light source by manipulating the spatial phase structure of an incident light field,characterized by the same amplitude but reversed-phase at spatially symmetric locations.Such chaotic light still reflects the bunching effect of thermal light(with a peak correlation coefficient of 2),and produces an anomalously spatial super-bunching effect in second-order interference experiments,along with a theoretical peak of 3.Compared with other light sources,such as pseudo-thermal light,it is experimentally verified that the phase-sensitive symmetric thermal light can break through the upper limit of visibility of second-order interference fringes from 1/3 to 1/2 of the original one.This work therefore reveals an inner connection between phase-sensitive coherence and super-bunching correlation,which can be utilized to boost the visibility of various correlation-enabled applications.This work provides a new approach to generate super-bunching pseudo-thermal light.

关 键 词：超聚束效应 二阶干涉 相敏相干性 强度关联 

分 类 号：O436.1[机械工程—光学工程]