All-optical complex field imaging using diffractive processors. (arXiv:2401.16779v1 [physics.optics])

Complex field imaging, which captures both the amplitude and phase
information of input optical fields or objects, can offer rich structural
insights into samples, such as their absorption and refractive index
distributions. However, conventional image sensors are intensity-based and
inherently lack the capability to directly measure the phase distribution of a
field. This limitation can be overcome using interferometric or holographic
methods, often supplemented by iterative phase retrieval algorithms, leading to
a considerable increase in hardware complexity and computational demand. …

amplitude arxiv capability distribution fields image imaging index information insights intensity objects optical optics physics physics.optics processors samples sensors