Fig. 3: Probing chirality in quartz with linearly polarized (ϵ = 0.05) asymmetrical OAM beams.
From: Intrinsic dichroism in amorphous and crystalline solids with helical light
a HD (Type I) for left- and right-handed quartz as a function of displacement of the singularity (l = ± 1). b Chiral signal, HD (Type II: ± l; ± s) = 2 \(\frac{R(\pm l;\pm s)-L(\pm l;\pm s)}{R(\pm l;\pm s)+L(\pm l;\pm s)}\) as function of peak laser fluence for linearly polarized l = ± 1 and circularly polarized l = 0 beams. c Orientation-dependent transmission of l = + 1 in right- and left-handed in quartz. b, c were obtained when the singularity was at the position marked by a solid rectangle in (a). The error bars in (a) represent the standard error, of multiple measurements (n = 3), calculated for an average fluence range used to obtain HD. The error bands in (b) represent the error propagation of the standard error of multiple transmission curves. The error bands in (c) represent the standard error at every position of the crystal (n = 20 points).
