### Nonlinear optical interacions

Fill in appropriate wavelenghts in columns to obtain phase matching angles, angular walk-offs, group velocity mismatches (GVM) of the corresponding collinear SFG/DFG/SHG/OPO process, satisfying relation $$\frac{1}{\lambda_1}+\frac{1}{\lambda_2}=\frac{1}{\lambda_3}.$$ Values of $$d_\mathrm{eff}$$ are maximal and given for the indicated azimuthal angle $$\phi$$, with walk-off included.

X axis