CNISM, Dipartimento di Ingegneria dell'Informazione, Università di Brescia, Brescia, Italy.
Opt Lett. 2013 May 15;38(10):1648-50. doi: 10.1364/OL.38.001648.
We show that second-harmonic generation in the regime of weak dispersion/diffraction can exhibit a coexistence of wave breaking mechanisms, such that a gradient catastrophe yielding a dispersive shock wave competes with modulational instability, leading to the generation of wavetrains with incommensurate frequencies and eventually to the destruction of the shock wave-train.
我们表明，在弱色散/衍射条件下的二次谐波产生可以表现出波破裂机制的共存，例如，梯度灾变产生的弥散激波与调制不稳定性竞争，导致具有不同频率的波列的产生，最终导致激波列的破坏。
