Fluctuating pulse propagation in resonant nonlinear media: self-induced transparency random phase soliton formation

Abstract

We numerically investigate partially coherent short pulse propagation in nonlinear media near optical resonance. We examine how the pulse state of coherence at the source affects the evolution of the ensemble averaged intensity, mutual coherence function, and temporal degree of coherence of the pulse ensemble. We report evidence of self-induced transparency random phase soliton formation for the relatively coherent incident pulses with sufficiently large average areas. We also show that random pulses lose their coherence on propagation in resonant media and we explain this phenomenon in qualitative terms.

Decoupled polarization dynamics of incoherent waves and bimodal spectral incoherent solitons

“…© 2016 Optical The propagation of partially coherent nonlinear optical waves is a subject of growing interest in different fields of investigations, such as, e.g., supercontinuum (SC) generation [1][2][3][4][5][6][7][8], lasers [9,10], rogue waves [11,12], or shock waves [13,14]. Remarkable phenomena such as optical wave condensation [15,16], or incoherent soliton propagation with inertial [7,17,18], resonant [19], or nonlocal [20] nonlinearities have been discussed in different contexts. A different form of "spectral incoherent soliton" (SIS), which cannot be identified in the temporal domain but solely in the frequency domain, has been also reported in optical fiber systems [21][22][23][24].…”