Enhancement of chi((2)) cascading processes in one-dimensional photonic bandgap structures.
We theoretically analyze the nonlinear phase shifts induced by cascaded chi((2)):chi((2)) processes in one-dimensional photonic bandgap structures. We find that the enhancement of the density of modes near the band edge, coupled with a suitable choice of relative phase mismatch, leads to a remarkable new effect: The relative phase shift of the fundamental field on transmission can be of the order of pi over a distance of 7mum , with input intensities of the order of only 10 MW/cm(2).
D'Aguanno
G
G
Centini
M
M
Sibilia
C
C
Bertolotti
M
M
Scalora
M
M
Bloemer
M J
MJ
Bowden
C M
CM