title: Modulation instability of incoherent beams in noninstantaneous nonlinear media
abstract: We show that modulation instability can exist with partially spatially incoherent light beams in a noninstantaneous nonlinear environment. For such incoherent modulation instability to occur, the value of the nonlinearity has to exceed a threshold imposed by the degree of spatial coherence.
authors.affiliation: Physics Department, Princeton University, Princeton, New Jersey 08544, USA.
authors.initials: M
authors.lastname: Soljacic
authors.initials: M
authors.lastname: Segev
authors.initials: T
authors.lastname: Coskun
authors.initials: DN
authors.lastname: Christodoulides
authors.initials: A
authors.lastname: Vishwanath