We show that the spatial coherence of a partially incoherent light beam can be greatly enhanced through an energy-conserving interaction with an incoherent or a coherent dark spatial soliton. Computer simulations show that during this process a portion of the incoherent beam is trapped within the dark notch of the dark soliton, thus forming a sharp intensity spike. In this region the correlation length dramatically increases by at least 2 orders of magnitude.
© 2000 Optical Society of America
Tamer H. Coskun, Alexandra G. Grandpierre, Demetrios N. Christodoulides, and Mordechai Segev, "Coherence enhancement of spatially incoherent light beams through soliton interactions," Opt. Lett. 25, 826-828 (2000)