Coherence enhancement of spatially incoherent light beams through soliton interactions.
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.
Coskun
T H
TH
Grandpierre
A G
AG
Christodoulides
D N
DN
Segev
M
M