Efficient phase conjugation via stimulated Brillouin scattering in optical fibers

This work focuses on the study of stimulated Brillouin scattering (SBS) in optical fibers with a goal of studying its applicability for phase conjugation of radiation from CW lasers, and of using SBS to demonstrate high power fiber lasers by coherent combination of beams from several fiber amplifiers. Results revealed that both phase conjugation and beam cleanup behavior can take place via SBS in the 4.4 km MM fiber used, depending on the divergence of the input beam and the input power level.