Fast Method of Recovering Reference-Wave Intensity in Two-Step-Only Quadrature Phase-Shifting Holography

Abstract

Abstract:We present a simple yet effective method, without the need for any additional recording of intensity maps or tremendous iterative computations, to recover reference-wave intensity resulting from the complex hologram acquired by quadrature phase-shifting holography. This is achieved by utilizing a certain area of interest in the complex hologram. We select a particular area in the complex hologram where there is negligible diffraction from the test sample to estimate the reference-wave intensity. The calculated intensity value allows us to extract exact phase distribution of the object in the context of two-step-only quadrature phase-shifting holography (TSO-PSH) without the zeroth-order beam and the twin image noise on the reconstruction plane. Computer simulation and experimental results have been performed to verify the effectiveness and feasibility of our proposed method.

Enhancing Multi-Distance Phase Retrieval via Unequal Interval Measurements

“…However, they cannot obtain phase distribution, which is more important in the imaging of some transparent samples. To address this problem, the phase retrieval algorithm was proposed [1][2][3]. This is a type of technique to reconstruct the wavefront without interferometric measurement.…”