Use of hololenses for generation of speckle correlation fringes in LDA measurement volume

Abstract

In present investigation we propose a simple optical technique for generation of good quality, high contrast speckle correlation fringes of different spatial frequency depending upon the suitability of different flow condition and particle size at LDA measurement volume by illuminating double exposure specklegrams recorded in different inplane translation and rotation condition using hololenses on high resolution silver halide plates.