0000000000423658

AUTHOR

E. D'asaro

showing 5 related works from this author

Integrated optic Surface Plasmon Resonance Measurements in Glass substrates

2007

The surface plasmon resonance (SPR) technique is an optical method that can be used to measure the refractive index of organic nano-layers adsorbed on a thin metal film. Although there are many techniques for measuring biomolecular interactions, SPR-based techniques play a central role in many current biosensing experiments, since they are most suited to sensitive and quantitative kinetic measurements. Here we give some results from the analysis and numerical elaboration of SPR data regarding the flow of different solutions with refractive indexes in the range of interest (1-1.4). After a brief discussion of the principles of SPR and of waveguide fabrication technique, we give a description…

FabricationOpticsFiber optic sensorbusiness.industryChemistrySurface plasmonSurface plasmon resonanceThin filmbusinessBiosensorWaveguide (optics)Refractive index
researchProduct

Stable proton exchanged waveguides in Lithium Tantalate

2008

alpha, beta(1), and kappa(2) phases are investigated for planar waveguide fabrication by proton exchange in congruent lithium tantalate. The effective indices of planar waveguide eigenmodes were monitored over time, revealing that the exchange process induces aging instabilities in all phases except alpha.

Materials scienceproton exchanged (PE) waveguides Integrated optics lithium tantalate (LT) optical devicesIon exchangeProtonbusiness.industrytechnology industry and agriculturePhysics::OpticsNonlinear opticsWaveguide fabricationWaveguide (optics)Molecular physicsAtomic and Molecular Physics and OpticsElectronic Optical and Magnetic Materialschemistry.chemical_compoundPlanarchemistryLithium tantalateOptoelectronicsElectrical and Electronic EngineeringbusinessRefractive index
researchProduct

Parametric self-trapping in the presence of randomized quasi phase matching

2010

We report on experimental evidence of parametric spatial solitons in a quadratic crystal with randomized periodic ferroelectric poling. Two-color self-focusing via quadratic cascading overcomes the diffractive nature of both fundamental and frequency-doubled beams.

Quasi-phase-matchingAnderson localizationNonlinear opticsSpatial solitons01 natural sciences010309 opticsQuadratic equationOpticsdisordered systems0103 physical sciencescomplex systems; disordered systems; nonlinear optics; nonlinear waves; second harmonic generation; solitonssolitonscomplex systems010306 general physicsParametric statisticsPhysicsComputer simulationsecond harmonic generationbusiness.industryPolingParametric processesnonlinear wavesFerroelectricityAtomic and Molecular Physics and OpticsbusinessRefractive indexSpatial solitons Nonlinear optics Parametric processesOptics Letters
researchProduct

Interacting Solitons in a High Index Glass

2010

We investigate the interaction of two coherent 2D+1 solitary beams in a high index glass.

PhysicsIndex (economics)OpticsKerr effectOptical glassCondensed matter physicsbusiness.industryNonlinear opticsbusinessRefractive indexWaveguide (optics)Nonlinear optics Kerr effect Spatial solitonsConference on Lasers and Electro-Optics 2010
researchProduct

Ultraviolet generation in periodically poled Lithium Tantalate waveguides

2008

We demonstrate ultraviolet generation in lithium tantalate channel waveguides for frequency doubling via quasi-phase-matching. The samples, proton exchanged and nanostructured by electric-field assisted surface periodic poling with domains as deep as 40 μm, yield continuous wave light at 365.4 nm with conversion efficiencies larger than 7.5% W-1 cm-2.

Optical frequency multiplierMaterials sciencePhysics and Astronomy (miscellaneous)Protonbusiness.industrymedicine.disease_causechemistry.chemical_compoundOpticsFrequency conversionchemistryPeriodic polingYield (chemistry)Lithium tantalatemedicineContinuous waveOptoelectronicsbusinessUltraviolet
researchProduct