Applied Physics Letters · 1995 · 42 citations · 0 references
Natural SciencesMaterials EngineeringMaterials ScienceOptical MaterialsOpticsPhotonicsLuminescent MaterialsNonlinear Optical MaterialsNonlinear OpticsOptical SourcesPhotonic MaterialsUltrafast OpticsBlue Light EmissionEnergy Conversion EfficiencyGaussian Beam OpticsGaussian Beam PropagationHarmonic GenerationLaser Pulse DurationPeriodic StructureSecond-harmonic Generation
We fabricated a periodic domain structure in a 0.5 mm thick slab of LiTaO3 crystal by applying an external pulsed field at room temperature. Using a pulse dye laser with a pulsewidth of 8 ns and a repetition rate of 10 Hz, third-order quasi-phase-matched second-harmonic blue-light generation is demonstrated by free propagation of a 862.6 nm fundamental Gaussian beam in a 4 mm long LiTaO3 slab, with a single pulse energy of 0.072 mJ and an energy conversion efficiency of 5.7%.