Extracting parameters from slanted non-uniform gratings recorded in photopolymer. Part II: Experimental results

In Part I of this paper the modelling of diffraction by non-uniform volume grating was examined. In Part II slanted volume gratings are recorded in PVA/AA based photopolymer material layers and both the grating growth curves and off-Bragg angular scans are measured. Best fits to the resulting experimental data, using the non-uniform diffraction model previously described, are performed and the grating parameters which give the best fits to these data curves are identified. The quality of these fits is quantified using the root mean square error.