Reconstruction distance formula for Off-axis SIDH

摘要

INTRODUCTION The Holographic system can measure phase information with the interference pattern which requires coherence. So it is hard to use the natural light, such as white light and fluorescent light because the natural light is incoherent. But the natural light also has weak coherence with very short coherence length. Self-interfere nce derives interference pattern from the natural light by matching Optical Path Length (OPL)of the object wave and the reference wave. Self-interference Digital holography(SIDH)is based on Michelson interferometry with accurately matching the distance of object arm and reference arm. I suggest the reconstruction distance formula for SIDH. It is different with ordinary imaging formula because of the reconstruction distance is non-linear to sample axial position.