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。

The third-order ghost imaging with the second-order intensity correlation is theoretically and experimentally demonstrated. The resolution and visibility of the reconstructed image are discussed, and the relationship between resolution and visibility is analyzed. The theoretical results show that a tradeoff exists between the visibility and resolution of the reconstructed image; the better the image resolution, the worse the image visibility. Numerical simulations are carried out to verify this theory, and a ghost imaging experiment is conducted to validate our calculations. The experimental results agree with the theoretical predictions.