Jin Ying, Wang Haiyun, Liu Lin, Chen Yahong, Wang Fei, Cai Yangjian
Opt Express. 2022 Mar 14;30(6):9548-9561. doi: 10.1364/OE.454782.
The Rayleigh resolution criterion sets the minimum separation for two-point objects to be distinguishable in a classical optical imaging system. We demonstrate that the sub-Rayleigh resolution can be achieved in a telecentric imaging system with the help of a partially coherent illumination whose spatial coherence has lattice-like distribution. We show that the orientation-selective sub-Rayleigh imaging can be realized by controlling the spatial distribution of the coherence lattice into different symmetries. We carry out a proof-of-principle experiment to demonstrate the orientation-selective sub-Rayleigh imaging for a 1951 USAF resolution target. Our results indicate a flexible orientation-selective high-resolution imaging with spatial coherence engineering of the partially coherent light.
瑞利分辨率准则设定了在经典光学成像系统中可区分的两点物体的最小间距。我们证明，在具有空间相干呈晶格状分布的部分相干照明的远心成像系统中，可以实现亚瑞利分辨率。我们表明，通过将相干晶格的空间分布控制为不同的对称性，可以实现方向选择性亚瑞利成像。我们进行了原理验证实验，以证明对1951年美国空军分辨率靶标的方向选择性亚瑞利成像。我们的结果表明，利用部分相干光的空间相干工程可实现灵活的方向选择性高分辨率成像。
