Di Lena Francesco, Massaro Gianlorenzo, Lupo Alessandro, Garuccio Augusto, Pepe Francesco V, D'Angelo Milena
Opt Express. 2020 Nov 23;28(24):35857-35868. doi: 10.1364/OE.404464.
We propose a novel method to perform plenoptic imaging at the diffraction limit by measuring second-order correlations of light between two reference planes, arbitrarily chosen, within the tridimensional scene of interest. We show that for both chaotic light and entangled-photon illumination, the protocol enables to change the focused planes, in post-processing, and to achieve an unprecedented combination of image resolution and depth of field. In particular, the depth of field results larger by a factor 3 with respect to previous correlation plenoptic imaging protocols, and by an order of magnitude with respect to standard imaging, while the resolution is kept at the diffraction limit. The results lead the way towards the development of compact designs for correlation plenoptic imaging devices based on chaotic light, as well as high-SNR plenoptic imaging devices based on entangled photon illumination, thus contributing to make correlation plenoptic imaging effectively competitive with commercial plenoptic devices.
我们提出了一种新颖的方法，通过测量在感兴趣的三维场景内任意选择的两个参考平面之间光的二阶相关性，在衍射极限下进行全光成像。我们表明，对于混沌光和纠缠光子照明，该协议能够在后期处理中改变聚焦平面，并实现前所未有的图像分辨率和景深组合。特别是，景深相对于以前的相关全光成像协议增大了3倍，相对于标准成像增大了一个数量级，而分辨率保持在衍射极限。这些结果为基于混沌光的相关全光成像设备以及基于纠缠光子照明的高信噪比全光成像设备的紧凑设计发展开辟了道路，从而有助于使相关全光成像与商业全光设备有效竞争。
