Parameters
wx : half width of the incident beam waist in the XZ plane
wy : half width of the incident beam waist in the YZ plane
zx distance from the cylindrical lens to the waist of the incident beam in the XZ plane
zy distance from the cylindrical lens to the waist of the incident beam in the YZ plane
lam : wavelength
fix : effective focal length of the cylindrical lens working in the XZ plane
M2x : M square factor (M2) in the XZ plane
M2y : M square factor (M2) in the YZ plane
wix : half width of the emerging beam waist in the XZ plane
wiy : half width of the emerging beam in the YZ plane at a distance zix from the cylindrical lens
zix : distance from the cylindrical lens to the emerging beam waist in the XZ plane
