Single-exposure phase-shifting digital holography using a random-phase reference wave

Abstract

We propose a single-exposure phase-shifting digital holography based on a wave-splitting method using a random-phase reference wave. A random-phase reference wave gives random-phase distribution on the digital hologram. Using the amplitude and the phase distributions of the reference wave, the fully complex amplitude of the object wave is obtained. The proposed method requires not devised optical systems but ordinary imaging devices, such as CCD cameras. A preliminary experimental result is given to confirm the proposed method.

Fully interferometric three-dimensional imaging spectrometry using hyperbolic-type volume interferogram

“…In digital holography, methods based on various phase-shifting techniques that compute complex holograms have been reported recently [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. These complex holograms record wavefront information of the optical field propagated from an object under measurement.…”

Single-shot phase-shifting digital holography using a conventional camera

“…An experimental result using a random phase wave as a phase-encoded reference [10] wave is shown. A diffuser as a phase-encoded wave generator is used.…”

Single-shot color digital holography based on the fractional Talbot effect

“…However, they generally require sequential acquisition of interference patterns with different phase retardations of the reference beam, which is what prevents real-time measurement. Several techniques for time-resolved dynamic interferometry have been developed allowing one-shot operation and acquisition times only limited by the sensor capabilities [3][4][5][6][7].…”