Birefringence phase-matched direct third-harmonic generation in a ridge optical waveguide based on a KTiOPO<sub>4</sub> single crystal
Augustin Vernay, Véronique Boutou, C. Félix, David Jegouso, Florent Bassignot, Mathieu Chauvet, Benoı̂t Boulanger
Abstract
Birefringence phase-matched third-harmonic generation at 1594 nm is performed for the first time in a KTiOPO 4 single crystal micrometric ridge waveguide. The energy conversion efficiency reaches 3.4% for a pump energy as low as 2 µJ over a pulse duration of 15 ps at a repetition rate of 10 Hz. Strong agreements between theory and experiments for both phase-matching and conversion efficiency is obtained, which let us envision future triple photon generation quantum experiments.
Topics & Concepts
OpticsBirefringenceMaterials scienceSecond-harmonic generationPhase matchingEnergy conversion efficiencyWaveguideNonlinear opticsPhase (matter)OptoelectronicsCrystal (programming language)LaserPhysicsProgramming languageQuantum mechanicsComputer sciencePhotorefractive and Nonlinear OpticsAdvanced Fiber Laser TechnologiesPhotonic and Optical Devices