FIG. 11.

Normalized transmission curves $T$ for the $Z$ scan are given with the detector at selected finite distances, (solid black) $5z_R$, (dotted green) $10z_R$, (dashed orange) $100z_R$, and (solid blue) $\infty$ or far field, as a function of the position of the Kerr medium from Eqs. (2) as ${\text{Z}}_1=z_1/z_R$ and (A7). The Kerr medium is moved during a $\text{Z}$ scan. The trough and peak in the far field are shown as dashed black vertical lines.