title: Enhancement of second-harmonic generation from silicon nitride with gold gratings.
abstract: We report strong enhancement of second-harmonic generation in a hybrid nanostructure with gold gratings embedded in a silicon nitride film. Compared to a flat silicon nitride film, the enhancement factor can be as large as 102to 103for transverse magnetic and electric polarizations, respectively in good agreement with numerical results calculated using finite element method. For both polarizations, the enhancement arises from a resonance between the waveguide modes and grating.
authors.forename: Tingyin
authors.initials: T
authors.lastname: Ning
authors.forename: Chunlei
authors.initials: C
authors.lastname: Tan
authors.forename: Tapio
authors.initials: T
authors.lastname: Niemi
authors.forename: Martti
authors.initials: M
authors.lastname: Kauranen
authors.forename: Goëry
authors.initials: G
authors.lastname: Genty