Phase matching in anisotropic second-order nonlinear optical crystals is studied. All the possible phase matching configurations and existence conditions for general collinear three-wave mixing interactions are derived for propagation within the crystal principal planes. Closed form expressions for the critical phase matching angles are given wherever possible.
© 1990 Optical Society of America
Robert A. Morgan, "Phase matching considerations for generalized three-wave mixing in nonlinear anisotropic crystals," Appl. Opt. 29, 1259-1264 (1990)