The application discloses a single-
exposure compressed ultrafast coherent modulation imaging device. By combining coherent modulation imaging and compressed ultrafast
imaging technology, a sample to be measured is illuminated by coherent light, after the sample diffracts the
light wave, the
phase modulation of a random
phase modulation plate is carried out, the integral intensity distribution of the modulated wave front is recorded by deflection on a detection plane by using a slit fully opened stripe camera, a single compressed
diffraction pattern is obtained, a spatial two-dimensional to space-time three-dimensional
image reconstruction algorithm based on a plug-and-play framework and a depth image priori is developed, and
data recovery is carried out on the collected image by using the
algorithm. Compared with traditional ultrafast
optical imaging and
phase imaging technology, the application can quantitatively obtain complete intensity and phase information of a transient scene in a
single measurement process, has the characteristics of
picosecond time resolution and real-time quantitative intensity-
phase imaging capacity in single-
exposure phase imaging, and can be widely applied to various ultrafast phenomena requiring phase observation.