Fig. 7: Off-axis holographic imaging model.
From: Quantitative phase imaging based on holography: trends and new perspectives
The interferometry offers k-space shifting between the object field and the reference field. The spatial field distribution in the complex-domain is reconstructed from a single interferogram in the real-domain. It belongs to the Fourier-domain interferometric method in Fig. 3e. a Off-axis configuration, the reference field is tilted to create spatial modulation. b Light scattering geometry, U is the incident field, ki is the incident wavevector and ks is the scattering wave vector. c off-axis recording in the camera. θoff is the off-axis angle between the object wave and reference wave, and it can be divided as θx and θy in x and y axis, respectively. d The FT of the off-axis interferogram and the bandwidth limitation. e The FT of the object wave in off-axis interference. f The FT of the slight off-axis interferogram and the bandwidth limitation. g The FT of the object wave in slight off-axis interference. h The configuration of common-path diffraction phase. i1-i4 The off-axis holography, the k-space, the reconstructed amplitude, and the reconstructed phase
