Nonlinear mechanisms to Rogue events in the process of interaction between optical filaments

Autor:	Kovachev, L. M., Georgieva, D. A.
Rok vydání:	2015
Předmět:	Physics - Optics Nonlinear Sciences - Pattern Formation and Solitons
Druh dokumentu:	Working Paper
Popis:	We investigate two types of nonlinear interaction between collinear femtosecond laser pulses with power slightly above the critical for self-focusing $P_{cr}$. In the first case we study energy exchange between filaments. The model describes this process through degenerate four-photon parametric mixing (FPPM) scheme and requests initial phase difference between the waves. When there are no initial phase difference between the pulses, the FPPM process does not work. In this case it is obtained the second type of interaction as merging between two, three or four filaments in a single filament with higher power. It is found that in the second case the interflow between the filaments has potential of interaction due to cross-phase modulation (CPM). Comment: 9 pages, 4 figures. arXiv admin note: text overlap with arXiv:1404.3578
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1503.08262 Zobrazit plný text záznamu View this record from Arxiv