Optical instability in noncollinear second-harmonic generation.
An analysis is made of second-harmonic generation in the scheme of noncollinear (vectorial) synchronism, where the second pump beam is built up from the first pump beam after it passes through the crystal. We find the threshold of self-pulsations with this scheme.
Vasnetsov
M V
MV
Slyusarenko
S S
SS