CNISM, Dipartimento di Ingegneria dell’Informazione, Università di Brescia, Brescia, Italy.
Opt Lett. 2012 Mar 15;37(6):1082-4. doi: 10.1364/OL.37.001082.
We investigate wave-breaking and dispersive shock wave formation driven by a pulse undergoing second-harmonic generation in a quadratic medium. We show that the process is accessible in the regime of high phase-mismatch (cascading limit) and weak dispersion. Insight into the phenomenon is obtained by means of a suitable hydrodynamic reduction of the equations that govern the mixing.
我们研究了在二次介质中由二次谐波产生的脉冲驱动的波破裂和弥散激波的形成。我们表明，在高相位失谐（级联极限）和弱色散的条件下，这个过程是可以实现的。通过对控制混合的方程进行适当的流体力学简化，我们获得了对这一现象的深入了解。
