Propagation based phase retrieval of simulated intensity measurements using artificial neural networks

Understand

Determining the phase of a wave from intensity measurements has many applications in fields such as electron microscopy, visible light optics, and medical imaging.

• Propagation based phase retrieval, where the phase is obtained from defocused images, has shown significant promise.
• There are, however, limitations in the accuracy of the retrieved phase arising from such methods.
• Sources of error include shot noise, image misalignment, and diffraction artifacts.