Study of reference waves in single-exposure generalized phase-shifting digital holography

Abstract

The appropriate reference wave in single-exposure phase-shifting digital holography using a random-complex-amplitude encoded reference wave is experimentally investigated. Although the reference wave is generalized, the quality of reconstructed images depends on it. Furthermore, when the reference wave satisfies a certain condition, reconstructed images cannot be obtained in this method. After the certain condition is presented, the appropriate condition is studied using a speckle property. Experimental results are given to investigate the relations between the quality of reconstructed images and the sizes of speckles of the reference waves. The results prove that the appropriate reference wave exists in this method.

Phase-shifting digital holography with a tri-focal Fibonacci telescope in a single exposure

“…Phase-shifting digital holography with a tri-focal Fibonacci telescope in a single exposure Yingge Zhang 1,4 , Yaocun Li 2,3,4 , You Li 2,3 , Ailing Tian 1 and Junyong Zhang 2 the optical detector [15]. Nomura proposed a single-exposure phase-shifting technique with a random phase reference beam [16]. The whole process requires two frames of interferograms, one of which corresponds to the interference pattern between the object and reference beams with the other being a random phase interferogram; the two holograms are then calculated and synthesized in a computer.…”

Roadmap on optical security

“…To avoid the use of a special phase-shifting device, single-exposure phase-shifting digital holography using a random-complexamplitude encoded reference wave was proposed. The amplitude and phase of the reference wave are generalized in the algorithm [18]. Advances in science and technology to meet challenges Figure 3 shows the progress in digital holography.…”

A review of snapshot multidimensional optical imaging: Measuring photon tags in parallel

“…Nomura et al demonstrated that the object’s wavefront can be recovered by interference with a random-phase reference wave [186–188]. However, the phase of the reference wave must be measured a priori .…”