通过对二维“鬼”成像的理论和实验分析, 探讨了一种新型成像原理和系统, 并从理论和实验上利用近红外光源实现了二阶二维“鬼”成像。从光波动经典理论入手, 利用完全非相干、均亮的近红外光源对二阶二维“鬼”成像理论进行了详细的分析, 推导出其解析表达式, 并利用针孔作为被成像物体进行了数值模拟分析。数值模拟结果表明, 利用二阶光强度关联成像方法可以精确重现被成像物体。实验上, 利用掺饵光纤放大器作为产生非相干近红外光光源, 设计并实现了二阶二维“鬼”成像实验。实验结果表明, 基于光波动学经典理论的该数值模型所预测的数值仿真结果, 与实验结果一致。

Second-order 2D ghost imaging using near-infrared light is investigated theoretically and experimentally. The far-field analytical results of this imaging technology realized with a uniformly bright, incoherent and quasi-monochromatic light source are deduced and the numerical simulations are performed using pinhole as the imaging object. Simulation results show that the second-order intensity correlation can reproduce the object exactly. A second-order ghost imaging experiment by using erbium-doped fiber amplifier as its light source is carried out to accurately image a 300μm pinhole. The results of the numerical simulations based on the classical wave theory agree well with the experimental results.