Multi-dimensional Imaging

Chapter 1Parallel Phase-Shifting Digital Holography

Yasuhiro Awatsuji

Division of Electronics, Kyoto Institute of Technology, Japan

1.1 Chapter Overview

Parallel phase-shifting digital holography is a technique capable of not only instantaneously measuring the three-dimensional (3D) field but also motion picture measurement of time evolution in the 3D field. The recording and reconstruction flow of this technique are described. The technique has been experimentally demonstrated by a parallel phase-shifting digital holography system using a normal-speed camera, which lead to a high-speed camera being constructed and used so that 3D motion and phase motion picture capture were demonstrated at the rate of up to 262 500 frames per second (fps). As an ultrafast phase imaging technique, a parallel phase-shifting digital holography system using a femtosecond pulsed laser has been experimentally demonstrated. A portable parallel phase-shifting digital holography system will also be introduced here. Finally some function-extended parallel phase-shifting digital holography will be mentioned for the purpose of motion picture-measurement of 3D and color, 3D and spectral characteristics, 3D and polarization characteristics, and 3D motion picture microscopy.

1.2 Introduction

Holography is a technique for recording and reconstructing perfect wavefronts of objects [1]. The technique actively investigates not only three-dimensional (3D) displays but also 3D measurement of objects. In this ...