Abstract

Ptychography is a coherent imaging technique that has been applied in x-ray, optical, electric domains [1]. By this method, the complex-amplitude of an object is retrieved from a set of diffraction patterns obtained by localized illuminating probes, which are overlapped with their neighbors. Ptychography generally requires a long time to record necessary diffraction patterns for scanning the object plane with a probe. Therefore, this technique is difficult to apply to moving objects. To solve the problem, we have proposed a one-shot ptychography in which diffraction patterns are captured at a moment using polarization and defocus variations [2]. In the implementation, the intensities of the diffraction patterns are quantized at an image sensor and also degraded by a noise. In this report, we show simulation results about the capability in reconstruction of complex-amplitude and robustness to the noise.

© 2015 Japan Society of Applied Physics, Optical Society of America