Spatial supercontinuum generation in nonlinear photonic lattices.
We show that two Bloch modes launched into a nonlinear photonic lattice evolve into a comb or a supercontinuum of spatial frequencies, exhibiting a sensitive dependence on the difference between the quasi-momenta of the two initially excited modes. This phenomenon results from four-wave mixing combined with exchanges of momentum between the optical field and the lattice.
Manela
Ofer
O
Department of Physics and Solid State Institute, Technion, Haifa 32000, Israel.
Bartal
Guy
G
Segev
Mordechai
M
Buljan
Hrvoje
H