Author :
Wang, W. ; Roppo, V. ; Kalinowski, K. ; Neshev, D.N. ; Cojocaru, C. ; Trull, J. ; Vilaseca, R. ; Staliunas, K. ; Krolikowski, W. ; Kivshar, Y.S.
Abstract :
We study nonlinear frequency generation in media with random ferroelectric domain structure. We show that randomness enables one to realize broadband third harmonic generation via cascading of two second order quasi-phase matched nonlinear processes. We investigate spatial and polarization properties of the emitted waves and find them to be in agreement with theoretical predictions.