Experimental study of stimulated Brillouin scattering in open cells and multimode optical fibres.

Abstract

An experimental study of the stimulated Brillouin scattering (SBS) were performed by performing optical phase conjugation in open cells and multimode optical fibres using a Q-switched, pulsed Nd:YAG laser (λ = 1.064μm). Experiments were done with test tubes that contained two SBS liquids - Fluorinert and Acetone, and multimode optical fibres with 62.5μm core diameter. The three fundamental parameters of SBS: the threshold energy, reflectivity and phase conjugate fidelity were characterised and analysed. In addition, the temporal behaviour of Stokes beam, phase correction, optical breakdown, and pulse compression were investigated.