title: Measurement of modulational instability gain of second-order nonlinear optical eigenmodes in a one-dimensional system.
abstract: We have investigated the amplification of a spatially periodic perturbation applied to a wide fundamental beam launched near phase matching for second-harmonic generation in a lithium niobate film waveguide. We measured the gain coefficient for the modulational instability of quadratic eigenmodes as a function of periodicity, intensity, and wave-vector mismatch. Excellent agreement with theory was obtained.
authors.affiliation: School of Optics and Center for Research and Education in Optics and Lasers, University of Central Florida, 4000 Central Florida Boulevard, Orlando, Florida 32816-2700, USA.
authors.forename: R
authors.initials: R
authors.lastname: Schiek
authors.forename: H
authors.initials: H
authors.lastname: Fang
authors.forename: R
authors.initials: R
authors.lastname: Malendevich
authors.forename: G I
authors.initials: GI
authors.lastname: Stegeman