Figure 3
From: Dramatic enhancement of supercontinuum generation in elliptically-polarized laser filaments

Dependence of supercontinuum spectra on the input ellipticity.
Experimental (a,c) and simulated (b,d) results are compared for single filaments in nitrogen (a,b) and oxygen (c,d) gases. Experiments and simulations (See Supplementary Fig. 3) in atomic gases (Ar and Kr), showed no anomalous behavior.