Search results for "Parametric Conversion"

showing 3 items of 3 documents

Parametric conversion in micrometer and sub-micrometer structured ferroelectric crystals by surface poling

2012

We report on recent technological improvements concerning nonlinear patterning of lithium niobate and lithium tantalate in the micrometer and submicrometer scales using surface periodic poling for ferroelectric domain inversion. The fabricated samples were employed for frequency doubling via quasiphase-matching both in bulk and guided wave geometries, including forward and backward configurations and wavelength conversion in bands C and L. We also investigated short-period quasiperiodic samples with randomly distributed mark-to-space ratios.

Materials scienceSurface PolingLithium niobatePhysics::OpticsSettore ING-INF/01 - ElettronicaFerroelectric Crystalchemistry.chemical_compoundOpticsPeriodic polinglcsh:QC350-467Parametric ConversionupconversionGuided wave testingbusiness.industryPolingparametric generationferroelectricsSettore ING-INF/02 - Campi ElettromagneticiFerroelectricityAtomic and Molecular Physics and OpticsPhoton upconversionElectronic Optical and Magnetic MaterialschemistryQuasiperiodic functionLithium tantalatebusinesslcsh:Optics. Light
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Broadband Second-Harmonic Generation via Random Quasi-Phase-Matching in PPLT

2010

We demonstrated broadband second-harmonic generation via random Quasi-Phase-Matching in periodically poled Lithium Tantalate.

PhysicsQuasi-phase-matchingSum-frequency generationbusiness.industryPhysics::OpticsSecond-harmonic generationNonlinear opticsWavelength conversionPhysics::Classical PhysicsComputer Science::OtherNonlinear optics Parametric conversion Random quasi-phase-matchingchemistry.chemical_compoundOpticschemistryLithium tantalateBroadbandbusinessPhase matching
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Integrated frequency shifter in periodically poled lithium tantalate waveguide

2010

A frequency shifting device is fabricated and tested in a ferroelectric waveguide in a low-photorefractivity crystal. Periodic poling for quasi-phase-matching and channels for operation in the near-infrared C-band were obtained in congruent lithium tantalate, demonstrating for the first time both wave confinement and two-stage parametric conversion in such waveguides.

Quasi-phase-matchingMaterials sciencebusiness.industryNonlinear opticsPhysics::OpticsPhotorefractive effectWaveguide (optics)Ferroelectricitychemistry.chemical_compoundOpticschemistryPeriodic polingNonlinear optics Integrated optics Parametric conversionLithium tantalateElectrical and Electronic EngineeringbusinessNonlinear Sciences::Pattern Formation and SolitonsMicrowave
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