非局域成像(又称为鬼成像)是近年来兴起的一种新的、利用光场二阶关联进行成像的方法。在这个领域里, 已经取得了很多有重大意义的成果。在传统的非局域成像系统中, 分束器是一个不可缺少的光学元件。但是, 分束器的使用却限制了非局域成像在很多领域的进一步运用, 特别是利用自然光源进行非局域成像。介绍了一种新的实验装置, 利用对光源面上的强度调制, 在赝热光作为光源的条件下, 实现无分束器的非局域成像。并从理论上研究了这个装置, 给出了实验结果。最后, 将该实验装置进行改进, 使之能够应用于更广泛的场合。无分束器非局域成像实验的成功, 对于非局域成像的实际应用有重大价值。

Ghost imaging has attracted much attention since it was realized.Many significant results have been achieved in the field of ghost imaging, in which the beamsplitter is an indispensable optical component. However, the existence of the beamsplitter hinders the wider application of ghost imaging, especially with the natural light. A method to realize ghost imaging without beamsplitter by modulating the light intensity on the plane of light source is introduced. Then it is studied theoretically and experimentally. Finally, for further applications, the basic model is improved to a more advanced one. The success of the ghost imaging without beamsplitter is very significant to the applications of ghost imaging.