Search results for " lithium niobate"

showing 9 items of 9 documents

NEAR INFRARED PICOSECOND PULSED BACKWARD SECOND-HARMONIC-GENERATION IN PERIODICALLY-POLED LITHIUM NIOBATE

2011

We report on backward second-harmonic-generation in bulk periodically-poled congruent lithium niobate with a 3.2μm period. A picosecond pulsed laser allowed us exciting a resonance at 1722nm. The resonances were also resolved by temperature tuning.

Lithium NiobatePeriodically-poled congruent lithium niobateSettore ING-INF/02 - Campi ElettromagneticiBackward second-harmonic-generationSettore ING-INF/01 - Elettronica
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Spatial Solitons in Quadratic 2D Nonlinear Photonic Crystals

2007

We report on the first investigations into parametric solitary-wave formation in 2D nonlinear photonic crystals and present experimental results obtained in an hexagonally poled LiNbO3 waveguide designed for twin-beam second harmonic generation at telecom wavelengths.

Physicsbusiness.industryLithium niobatePhysics::OpticsNonlinear opticsResonanceSecond-harmonic generationWaveguide (optics)WavelengthNonlinear systemchemistry.chemical_compoundOpticschemistryOptoelectronicsnonlinear optics photonic crystals spatial solitons waveguides lithium niobatebusinessNonlinear Sciences::Pattern Formation and SolitonsPhotonic crystal2007 9th International Conference on Transparent Optical Networks
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Continuous-Wave Backward Frequency Doubling in Periodically Poled Lithium Niobate

2010

Backward-Second-Harmonic-GenerationLithium Niobate.Periodically Poled Lithium Niobate
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All-Optical frequency Shifter in a Periodically Poled Lithium Tantalate Waveguide

2011

A frequency shifting device is fabricated and tested in a congruent Lithium Tantalate waveguide. Periodic poling for quasi-phase-matching and channels for operation in the near-infrared C-band were obtained, demonstrating a two-stage parametric conversion.

All-optical wavelength conversion second-harmonic generation difference-frequency generation ferroelectric crystals periodic poling Lithium Tantalate Lithium Niobate.Settore ING-INF/02 - Campi ElettromagneticiSettore ING-INF/01 - Elettronica
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Continuous-Wave Backward Frequency Doubling in Periodically Poled Lithium Niobate

2010

We report on backward second-harmonic- generation in periodically poled lithium niobate with a 3.2 micron QPM period. A tunable continuous-wave Ti:Sapphire laser allowed us exciting two resonant orders. Experimental data compared well with standard theory.

Nonlinear optics lithium niobate Backward frequency doubling
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GENERAZIONE DI SECONDA ARMONICA RETRO-PROPAGANTE IN NIOBATO DI LITIO CON POLING PERIODICO

2010

We report on backward second-harmonic-generation in bulk periodically poled congruent lithium niobate with a 3.2 micron period. A tunable continuous-wave Ti:Sapphire laser allowed us exciting two resonant quasi-phase-matched orders. Resonances were also resolved by temperature tuning.

Nonlinear optics Backward second-harmonic generation Lithium niobate
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Photoelectric fields in doped lithium niobate crystals

2019

Photoinduced light scattering (PILS) in nominally pure stoichiometric and congruent lithium niobate single crystals (LiNbO3), and ones doped with B³⁺, Cu²⁺, Zn²⁺, Mg²⁺, Gd³⁺, Y³⁺, Er³⁺ cations was studied. All crystals have a relatively low effect of photorefraction and are promising materials for frequency conversion, electro-optical modulators and shutters. It was found that the photovoltaic and diffusion fields for some crystals have a maximum at a wavelength of 514.5 nm. All the crystals studied are characterized by a maximum of the integral intensity of the speckle structure of the PILS at a wavelength of 514.5 nm.

Materials scienceSolid-state physicsphotorefractive effectLithium niobate02 engineering and technology01 natural sciences7. Clean energyphotovoltaic and diffusion fieldschemistry.chemical_compound0103 physical sciencesMaterials Chemistry:NATURAL SCIENCES:Physics [Research Subject Categories]media_common.cataloged_instanceElectrical and Electronic EngineeringEuropean union010306 general physicsmedia_commonHorizon (archaeology)Rayleigh photoinduced light scatteringDopingPhotorefractive effectPhotoelectric effect021001 nanoscience & nanotechnologyCondensed Matter PhysicsEngineering physicsElectronic Optical and Magnetic MaterialschemistryControl and Systems EngineeringSingle crystal of lithium niobateCeramics and Composites0210 nano-technologyIntegrated Ferroelectrics
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Backward Frequency Doubling in Periodically Poled Lithium Niobate in the Pulsed Regime

2011

Settore ING-INF/02 - Campi ElettromagneticiSettore ING-INF/01 - ElettronicaNonlinear Optics Backward Frequency Doubling Lithium Niobate
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Spatial Simultons in 2D Photonic Crystals of Nonlinear Origin

2007

We observed for the very first time quadratic spatial solitons (simultons) in a two dimensional photonic lattice defined by periodic sign inversion of its susceptibilty. This is the first demonstration of quadratic self-confinement in a 2D purely nonlinear photonic crystal.

Ferroelectric Crystals Nonlinear Optics Spatial solitons Lithium Niobate Cascading Parametric Generation
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