title: Second-harmonic generation in periodically-poled thin film lithium niobate wafer-bonded on silicon.
abstract: Second-order optical nonlinear effects (second-harmonic and sum-frequency generation) are demonstrated in the telecommunication band by periodic poling of thin films of lithium niobate wafer-bonded on silicon substrates and rib-loaded with silicon nitride channels to attain ridge waveguide with cross-sections of ~2 µm2. A nonlinear conversion of 8% is obtained with a pulsed input in 4 mm long waveguides. The choice of silicon substrate makes the platform potentially compatible with silicon photonics, and therefore may pave the path towards on-chip nonlinear and quantum-optic applications.
authors.forename: Ashutosh
authors.initials: A
authors.lastname: Rao
authors.forename: Marcin
authors.initials: M
authors.lastname: Malinowski
authors.forename: Amirmahdi
authors.initials: A
authors.lastname: Honardoost
authors.forename: Javed Rouf
authors.initials: JR
authors.lastname: Talukder
authors.forename: Payam
authors.initials: P
authors.lastname: Rabiei
authors.forename: Peter
authors.initials: P
authors.lastname: Delfyett
authors.forename: Sasan
authors.initials: S
authors.lastname: Fathpour