Xl. Yang et al., NONCRITICAL PHASE-MATCHING IN THE DIFFERENT FREQUENCY GENERATION OF NONCOLLINEAR ALIGNMENT - AN EXACT ANALYSIS, Applied optics, 33(31), 1994, pp. 7518-7519
By analyzing the phase mismatch in the different frequency generation
of noncollinear alignment, we obtain the condition in which noncritica
l phase matching can be realized. The relevant equation for determinin
g the optimum angles between the incident beams is derived. The calcul
ated result agrees exactly with the experimental one.