3DTo2DΒΆ

Type:enum
Range:no, yes
Default:no
Appearance:simple

Activating this parameter applies a final rotation on the defined beam which interchanges the coordinates

\begin{eqnarray*}
z & \rightarrow & y \\
y & \rightarrow & -z
\end{eqnarray*}

This helps to conveniently change the coordinate system from an originally 3D setup with z being the optical axis to match the xy-coordinate plane convention of a 2D simulation.