Figure 7

Number of diffraction rings as a function of light intensity for dye-doped PSLC cells treated with various concentrations of a silane coupler. The threshold intensities were 6.4 W cm⁻² for 0.15 wt%, 5.5 W cm⁻² for 0.05 wt%, 5.3 W cm⁻² for 0.01 wt%, 5.28 W cm⁻² for 0.008 wt%, 5.21 W cm⁻² for 0.006 wt%, 5.21 W cm⁻² for 0.005 wt% and 4.9 W cm⁻² for 0.003 wt%.