Demonstration of chirped pulse phase-shifting digital holography for capturing the sequence of ultrafast optical wavefronts

Abstract

We experimentally demonstrate chirped pulse phase-shifting digital holography. This method, recently proposed, allows for capturing the sequence of ultrafast optical wavefronts with picosecond time resolution in a single-shot manner. In our experiment, we recorded two object pulses with a time separation of 1.67 ps using 35-fs-width optical pulses, employing a diffractive optical element and a bandpass filter, on a single polarization camera simultaneously. We reconstructed both the intensity and phase images of these object pulses using modified calculations that account for corrections in the polarization states of the reference waves, thereby improving the quality of the reconstructed images.