Modulation instability of incoherent beams in noninstantaneous nonlinear media
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.
Soljacic
M
Physics Department, Princeton University, Princeton, New Jersey 08544, USA.
Segev
M
Coskun
T
Christodoulides
DN
Vishwanath
A