二值编码相位掩模交替迭代优化的无干涉非相干全息术  

Interferenceless Incoherent Holography Optimized by Alternate Iteration of Binary Coded Phase Mask

作　　者：潘立辉 于雪莲 程绪坤 孙彦乾 李秀芳 Pan Lihui;Yu Xuelian;Cheng Xukun;Sun Yanqian;Li Xiufang(Heilongjiang Provincial Key Laboratory of Quantum Control,School of Measurement-Control Technology and Communications Engineering,Harbin University of Science and Technology,Harbin 150080,Heilongjiang,China;Heilongjiang Province Key Laboratory of Laser Spectroscopy Technology and Application,School of Measurement-Control Technology and Communications Engineering,Harbin University of Science and Technology,Harbin 150080,Heilongjiang,China;Daheng New Epoch Technology,Inc.,Beijing 100085,China)

机构地区：[1]哈尔滨理工大学测控技术与通信工程学院黑龙江省量子调控重点实验室,黑龙江哈尔滨150080 [2]哈尔滨理工大学测控技术与通信工程学院黑龙江省激光光谱技术及应用重点实验室,黑龙江哈尔滨150080 [3]大恒新纪元科技股份有限公司北京光电技术研究所,北京100085

出　　处：《光学学报》2024年第9期45-53,共9页Acta Optica Sinica

基　　金：教育部产学合作协同育人项目(231104090250214);黑龙江省博士后出站科研启动金。

摘　　要：提出基于交替策略的随机轨迹直接二进制搜索法。数值仿真结果表明,该方法有效抑制了迭代过程中直流偏置的增加并提高迭代速度。实验结果证明,在同样的迭代次数下,该方法显著降低了重建图像的相关重建噪声。该方法推动了无干涉编码孔径相关全息术(I-COACH)系统在可见光范围外成像的应用。Objective Interferenceless coded aperture correlation holography(I-COACH)employs incoherent illumination,distinct from other coherent holography techniques.In I-COACH,phase information is redundant,and only the intensity pattern of the three-dimensional observation scene is required to recover object information.Owing to its interference-free nature,it offers the advantages of a simpler optical path and more convenient processing,transmission,and storage of data.This has led to the development of an even more simplified,lensless I-COACH(LI-COACH)system.Utilizing a coded phase mask(CPM),the object intensity is encoded into a specific speckle pattern.The object’s speckle hologram and the corresponding point spread hologram(PSH)are used for object reconstruction through cross-correlation,but this reconstruction method is associated with considerable background noise.I-COACH system based on binary coded phase mask significantly reduces reconstruction noise while expanding the imaging spectral range.In this approach,the peak-tobackground ratio of the PSH is enhanced using a direct binary search method to reduce the system’s reconstruction noise.However,this method increases the bias value of the PSH during the iteration process,leading to unstable iteration effects,and the use of dictionary order scanning results in slower iteration speeds.This paper proposes a direct binary search method based on an alternate strategy with random trajectories.Numerical simulations demonstrate that this method effectively suppresses the increase in the bias value during the iteration process and enhances the iteration speed.Experimental results confirm that,with the same number of iterations,this method significantly reduces the correlation reconstruction noise.This method advances the application of the I-COACH system in imaging beyond the visible light range,offering broad application prospects in fields such as astronomy and the military.Methods Our design is based on the principle of DBSA and employs a variant known as binary

关 键 词：图像处理 非相干全息术 无干涉编码孔径相关全息术 二值编码相位掩模 直接二进制搜索法 

分 类 号：O438[机械工程—光学工程]