Second-harmonic generation taking into account dispersion of nonlinear susceptibility |
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Authors: | E. V. Kazantseva A. I. Maimistov |
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Affiliation: | (1) Moscow Institute of Engineering Physics, Moscow, 115409, Russia |
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Abstract: | Second-harmonic generation in the field of an ultrashort pulse and the propagation of extremely short pulses in a medium with quadratic nonlinearity are analyzed. Second-harmonic generation is analyzed taking into account the effect of second-and third-order group velocity dispersion and dispersion of nonlinear susceptibility up to the second order. Corrections, whose order of smallness is determined by the parameter (ωL t p)?1, where t p is the pulse duration and ωL is the carrier frequency of the pump wave, are obtained. For a large phase mismatch, two new solutions are found that describe the stationary evolution of solitary pump and second-harmonic waves in the regions of both anomalous and normal group velocity dispersions. |
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