FAST TILT PHASE ERROR COMPENSATION METHOD AND DEVICE BASED ON WAVEFRONT ROTATION

摘要

The present invention is applicable to the technical field of optical imaging correction, and provides a fast tilt phase error compensation method and device based on wavefront rotation, comprising: collecting, by using a coaxial digital holographic microscopy system, a hologram of an object to be measured as an original hologram; rotating the original hologram by 180 degrees clockwise or counterclockwise to obtain a digital reference hologram as a rotary hologram; performing phase recovery processing on the original hologram by using a Fourier transform method in the digital holographic microscopy, so as to obtain an original expansion phase diagram φ1; performing phase recovery processing on the rotary hologram by using the Fourier transform method in the digital holographic microscopy, so as to obtain a rotary expansion phase diagram φ2; and subtracting the rotary expansion phase diagram φ2 from the original expansion phase diagram φ1, so as to obtain a phase diagram after compensation for the original expansion phase diagram. The method provided by the present invention realizes fast and accurate tilt phase error compensation in the coaxial digital holographic microscopy imaging.