Single-shot phase imaging based on transport of intensity equation

Abstract

In this paper, we demonstrate a cost effective set-up for transport of intensity equation (TIE)-based single-shot phase imaging. A Michelson interferometer like set-up has been utilized for optical implementation with light emitting diode as a light source. The mirrors used in the set-up are slightly tilted to obtain the two laterally separated defocused images as single-shot to the intensity-recording sensor. The experimental set-up does not require any costly optical instrument/module such as spatial light modulator. The experimental demonstration has been carried out with a micro-lens array. The adopted TIE algorithm has been verified with the simulation results of quadrature phase function.