Nonlinear coupling in a planar waveguide.
The thermal nonlinear response of a waveguide produced by sputtering a Corning 7059 glass film over a nonlinear substrate(Corning CS2-61) is studied with a pump-probe technique in a quasi-cw regime. The coupling efficiency is found to beafunction of pump power and chopping frequency. The coupling zone is scanned with a probe beam to examine the spatial dependence of the coupling efficiency.
Bertolotti
M
M
Dipartimento di Energetica, Universitcá degli Studi di Roma 1, Via Scarpa 16, 00167 Rome, Italy.
Fazio
E
E
Ferrari
A
A
Michelotti
F
F
Righini
G C
GC
Sibilia
C
C