Fig. 4

Dissymmetry enhancement mechanism. a The relative enhancement factor, g_CSL/g_CPL for final PDA films as a function of the relative light intensity ratio, R, by application of left-handed (black dots) or right-handed SCL(red dots). At least four irradiation experiments were performed to obtain the average g-value, and error bars represented standard deviations of measured g values. b The g value at 577 nm for final PDA films upon irradiation with two counter-propagating CPL beams with (i) opposite or (ii) same handedness; two CPL beams propagated along the same direction with (iii) opposite or (iv) same handedness; or (v) one CPL beam (4.0 mW cm⁻²), respectively