Phase-difference imaging based on FINCH
Wei Sheng, Youwen Liu, Yaoyao Shi, Jin hengchun, Jiming Wang
Abstract
The diffraction theory was used to calculate the point spread function (PSF) of a typical Fresnel incoherent correlation holography (FINCH) system. It was found that the phase of the reconstructed image corresponds to the phase difference between the original points in two mutually perpendicular polarization directions. The experimental results show that the FINCH system with reasonable parameters can realize the phase-difference imaging of objects and measure the phase difference of cross-polarization directions in birefringent materials.
Topics & Concepts
OpticsPolarization (electrochemistry)HolographyBirefringencePhysicsPoint spread functionPhase differencePhase (matter)DiffractionFresnel diffractionPerpendicularMathematicsGeometryQuantum mechanicsPhysical chemistryChemistryDigital Holography and MicroscopyAdvanced Optical Imaging TechnologiesOptical measurement and interference techniques