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| 1 | Robust far-field imaging by spatial coherence engineering显示文摘The degree of coherence(DOC)function that characterizes the second-order correlations at any two points in a light field is shown to provide a new degree of freedom for carrying information.As a rule,the DOC varies along the beam propagation path,preventing from the efficient information recovery.In this paper,we report that when a partially coher-ent beam carrying a cross phase propagates in free space,in a paraxial optical system or in a turbulent medium,the modulus of the far-field(focal plane)DOC acquires the same value as it has in the source plane.This unique propaga-tion feature is employed in a novel protocol for far-field imaging via the DOC,applicable to transmission in both free-space and turbulence.The advantages of the proposed approach are the confidentiality and resistance to turbulence,as well as the weaker requirement for the beam alignment accuracy.We demonstrate the feasibility and the robustness of the far-field imaging via the DOC in the turbulent media through both the experiment and the numerical simulations.Our findings have potential applications in optical imaging and remote sensing in natural environments,in the presence of op-tical turbulence. | Yonglei Liu Yahong Chen Fei Wang Yangjian Cai Chunhao Liang Olga Korotkova | 2021 | Opto-Electronic Advances2021，4，12： | 2 |
| 2 | Noniterative spatially partially coherent diffractive imaging using pinhole array mask显示文摘We propose and experimentally demonstrate a noniterative diffractive imaging method for reconstructing the complex-valued transmission function of an object illuminated by spatially partially coherent light from the far-field diffraction pattern.Our method is based on a pinhole array mask,which is specially designed such that the correlation function in the mask plane can be obtained directly by inverse Fourier transforming the diffraction pattern.Compared to the traditional iterative diffractive imaging methods using spatially partially coherent illumination,our method is noniterative and robust to the degradation of the spatial coherence of the illumination.In addition to diffractive imaging,the proposed method can also be applied to spatial coherence property characterization,e.g.,free-space optical communication and optical coherence singularity measurement. | Xingyuan Lu Yifeng Shao Chengliang Zhao Sander Konijnenberg Xinlei Zhu Ying Tang Yangjian Cai HPaul Urbach | 2019 | Advanced Photonics2019，1，1： | 2 |
| 3 | Radiation force of coherent and partially coherent flat-topped beams on a Rayleigh particle显示文摘 | Zhao Chengliang Cai Yangjian Lu Xuanhui | 2009 | Opt Express2009，17，3： | 1 |
| 4 | Partially coherent vortex beams:Fundamentals and applications显示文摘It has been over 30 years since the concept of optical vortices was first proposed by Coullet et al.in 1989,and the field of structured beams has grown extremely.In the last two decades,partially coherent vortex beams(PCVBs)have received increasing interest in the fields of optical manipulation,optical communication,optical imaging,etc.,and great progress has been made in the area of the coherence singularities,generation methods,topological charge measurements,and promising applications of PCVBs.In this review,we firstly outline the basic concepts of PCVBs.We explicate the relationship between the coherence vortices and optical vortices,and the evolution behavior of optical vortices to coherence vortices is summarized in detail.We discuss a special form of coherence singularity,ring dislocation,mathematically and physically.The ring dislocation in the correlation functions under low coherence is dependent on the mode indices,which provide a feasible approach to measure mode indices of PCVBs.Subsequently,we summarize the various methods for measuring the topological charge of PCVBs,highlight the measurement method based on the cross-correlation function,and a physical explanation on the relation between ring dislocation and topological charge is given.After that,we review the recent advances on experimental generation of several kinds of PCVBs.Lastly,we give an overview on the potential applications of PCVBs. | Miao Dong ChengLiang Zhao YangJian Cai YuanJie Yang | 2021 | Science China(Physics,Mechanics & Astronomy)2021，64，2： | 1 |
| 5 | Propagation of various dark hollow beams in a turbulent atmosphere显示文摘 | Cai Yangjian He Sailing | 2006 | Opt Express2006，14，4： | 1 |
| 6 | Hollow Gaussian Beams and their Propagation Properties显示文摘 | Cai Yangjian Lu Xuanhui Lin Qiang | 2003 | OPTICS LETTERS2003，28，13： | 1 |
| 7 | Scintillations of partially coherent multiple Gaussian beams in turbulence显示文摘 | Baykal Y Eyyuboglu H T Cai Yangjian | 2009 | Appl Opt2009，48，10： | 1 |
| 8 | Scintillation index of a multi-Gaussian Schell-model beam in turbulent atmosphere显示文摘 | Yangsheng Yuan Xianlong Liu Fei Wang Yahong Chen Yangjian Cai Jun Qu Halil T. Eyyubo?lu | 2013 | Optics Communications2013，，： | 1 |
| 9 | Radiation force of coherent and partially coherent flat topped beams on a Rayleigh parti- cle显示文摘 | Zhao Chengliang Cai Yangjian Lu Xuanhui | 2009 | Opt Express2009，17，3： | 1 |
| 10 | Ghost im- aging with electromagnetic stochastic beams显示文摘 | Tong Zhisong Cai Yangjian Korotkova O | 2010 | Op- tics Communications2010，283，20： | 1 |
| 11 | Paraxial propagation of Lorentz and Lorentz-Gauss beams in uniaxial crystals orthogonal to the optical axis 显示文摘 | Zhao Chengliang Cai Yangjian | 2010 | JModOpt2010，57，5： | 1 |
| 12 | Hollow Gaussian beams and their propagation properties显示文摘 | Cai Yangjian Lu Xuanhui Lin Qiang | 2003 | Opt Lett2003，28，13： | 1 |
| 13 | Hollow elliptical Gaussian beam and its propagation through aligned and misaligned paraxial optical systems显示文摘 | Cai Yangjian Lin Qiang | 2004 | J Opt Soc Am A2004，21，6： | 1 |
| 14 | Partially coherent flattened Gaussian beam and its paraxial propagation properties显示文摘 | Cai Yangjian He Sailing | 2006 | J Opt Soc Am A2006，23，10： | 1 |
| 15 | Paraxial propagation of a partially coherent flattened Gaussian beam through apertured AB-CD optical systems显示文摘 | Cai Yangjian Lii Xiang Eyyuboglu H T | 2008 | Opt Commun2008，281，12： | 1 |
| 16 | Review on partially coherent vortex beams显示文摘Ever since vortex beams were proposed, they are known for owning phase singularity and carrying orbital angular momentum (OAM). In the past decades, coherent optics developed rapidly. Vortex beams have been extended from fully coherent light to partially coherent light, from scalar light to vector light, from integral topological charge (TC) to fractional TC. Partially coherent vortex beams have attracted tremendous interest due to their hidden correlation singularity and unique propagation properties (e.g., beam shaping, beam rotation and self-reconstruction). Based on the sufficient condition for devising a genuine correlation function of partially coherent beam, partially coherent vortex beams with nonconventional correlation functions (i.e., non-Gaussian correlated Schell-model functions) were introduced recently. This timely review summarizes basic concepts, theoretical models, generation and propagation of partially coherent vortex beams. | Jun ZENG Rong LIN Xianlong LIU Chengliang ZHAO Yangjian CAI | 2019 | Frontiers of Optoelectronics2019，12，3： | 1 |
| 17 | Scintillation index of elliptical Gaussian beam in turbulent atmosphere显示文摘 | Cai Yangjian Chen Yuntian Eyyuboglu H T | 2007 | Opt Lett2007，32，16： | 1 |
| 18 | Scintillations of partially coherent multiple Oaussian beams in turbulence显示文摘 | Baykal Y EyyuboRlu H T Cai Yangjian | 2009 | Appl 0pt2009，48，10： | 1 |
| 19 | Paraxial propagation of a partially coherent Hermite-Gaussian beam through aligned and misaligned ABCDoptical systems显示文摘 | Cai Yangjian Chen Chiyi | 2007 | J Opt Soc Am A2007，24，8： | 1 |
| 20 | Fractiona fourier transform for partially coherent and partially polarized Gaussian-Schell model beams显示文摘 | Ge Di Lin Qiang | 2003 | J Opt A:Pure Appl Opt2003，5，： | 1 |
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