Simultaneous coherent imaging and strain measurement using coupled photorefractive holography and shearography

Opt Lett. 2008 Apr 15;33(8):797-9. doi: 10.1364/ol.33.000797.

Abstract

By coupling photorefractive holography with speckle shearography, it is possible to simultaneously perform both coherent imaging and strain measurement. Use of the photorefractive effect, which is insensitive to incoherently scattered light, is a significant advantage in coherent imaging as described. Experimental results obtained from a centrally loaded steel plate are presented.