6533b7d1fe1ef96bd125d8b4

RESEARCH PRODUCT

Second-harmonic generation in surface periodically poled lithium niobate waveguides:On the role of multiphoton absorption

Alfonso Carmelo CinoAlessandro BusaccaS. Riva SanseverinoMatteo CherchiGaetano AssantoLorenzo ColaceAlessia PasquaziSalvatore Stivala

subject

Surface (mathematics)Materials sciencePhysics and Astronomy (miscellaneous)Protonbusiness.industryLithium niobateEnergy conversion efficiencyGeneral EngineeringGeneral Physics and AstronomySecond-harmonic generationFOS: Physical sciencesPhysics::Opticschemistry.chemical_compoundchemistryOptoelectronicslithium niobate channel multi-photon absorptionbusinessAbsorption (electromagnetic radiation)Physics - OpticsOptics (physics.optics)

description

Second harmonic generation is investigated in lithium niobate channels realized by proton exchange and quasi-phase-matched by surface periodic-poling. The reduction in conversion efficiency at high powers is interpreted in terms of multi-photon absorption via two-color terms, yielding an estimate of the dominating three-photon process.

10.1007/s00340-008-3219-8https://cris.vtt.fi/en/publications/4bf9195f-e239-48f3-b122-d77372d1aa41