Search results for " optical pumping"

showing 4 items of 4 documents

Multi-line NIR-RGB emission in Nd:LiNbO3 RPE optical waveguides

2007

Simultaneous generation of four spectral emission lines has been achieved in Nd-doped lithium niobate reverse proton exchange optical waveguide cavities. Using a pump at 800 nm, the four lines were found and they are due to lasing at 1.3735 combined with parametric conversion at 0.687, 0.574 and 0.4 mum.

PhotoluminescenceMaterials scienceProtonbusiness.industryLithium niobatechemistry.chemical_elementNeodymiumion exchange lithium compounds neodymium optical pumping optical waveguides photoluminescenceSettore ING-INF/01 - ElettronicaOptical pumpingchemistry.chemical_compoundOpticschemistryRGB color modelElectrical and Electronic EngineeringbusinessLasing thresholdLine (formation)
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Quadrupole moments of odd-A 53−63Mn: Onset of collectivity towards N=40

2016

Physics letters / B 760, 387 - 392 (2016). doi:10.1016/j.physletb.2016.07.016

Optical pumpingNuclear and High Energy PhysicsProton01 natural sciences530IonOptical pumpingAtomic orbitalMetastability0103 physical sciencesNuclear Physics - ExperimentNeutronddc:530Laser spectroscopy010306 general physicsSpectroscopyNuclear ExperimentPhysicsManganese010308 nuclear & particles physicslcsh:QC1-999DeformationQuadrupoleQuadrupole momentsPhysics::Accelerator PhysicsDeformation; Laser spectroscopy; Manganese; Optical pumping; Quadrupole moments; Nuclear and High Energy PhysicsAtomic physicsPräzisionsexperimente - Abteilung Blaumlcsh:PhysicsPhysics Letters B
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Electromagnetically Induced Transparency and optical pumping processes formed in Cs sub-micron thin cell

2012

Abstract The Electromagnetically Induced Transparency (EIT) effect in a Λ -system formed by Cs atoms (6 S 1/2  − 6 P 3/2  − 6 S 1/2 ) confined in an extremely thin cell (ETC) (atomic column thickness L varies in the range of 800 nm –3 µm is studied both experimentally and theoretically. It is demonstrated that when the coupling laser frequency is in exact resonance with the corresponding atomic transition, the EIT resonance parameters weakly depend on L , which allows us to detect the effect at L  =  λ  = 852 nm. EIT process reveals a striking peculiarity in case of the coupling laser detuned by Δ from the atomic transition, namely the width of the EIT resonance rapidly increases upon an in…

Materials science[ PHYS.QPHY ] Physics [physics]/Quantum Physics [quant-ph]Electromagnetically induced transparencyDephasingPhysics::OpticsSub-micron cell01 natural scienceslaw.inventionCaesium vapor010309 opticsOptical pumpingOptics[PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph]law0103 physical sciencesPhysics::Atomic PhysicsElectrical and Electronic EngineeringPhysical and Theoretical Chemistry010306 general physicsExact resonancebusiness.industryResonanceLaserAtomic and Molecular Physics and OpticsElectronic Optical and Magnetic MaterialsVelocity selective optical pumping resonancesLaser frequencyAtomic physicsbusinessCoherence (physics)Electromagnetically Induced Transparency
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Excited-state absorption in erbium-doped silica fiber with simultaneous excitation at 977 and 1531 nm

2009

We report a study of the excited-state absorption (ESA) in erbium-doped silica fiber (EDF) pumped at 977 nm, when the fiber is simultaneously excited by signal radiation at 1531 nm. We show, both experimentally and theoretically, that ESA efficiency at 977 nm gets strongly enhanced only in the presence of signal power. Experimentally, this conclusion is supported through the detection of upconversion emission, a “fingerprint” of the ESA process, and through the measurements of the EDF nonlinear transmission coefficient for the pump wavelength, which is sensitive to the ESA value. It is shown that the experimental data are precisely modeled with an advanced five-level Er3+ model developed fo…

Optical pumpingMaterials scienceSilica fiberbusiness.industryExcited statesUNESCO::FÍSICAGeneral Physics and Astronomychemistry.chemical_elementPhoton upconversionOptical pumpingErbiumOpticschemistry:FÍSICA [UNESCO]Fiber laserExcited stateDopingSilicon compoundsOptoelectronicsDoping ; Erbium ; Excited states ; Fibre lasers ; Optical pumping ; Silicon compoundsFiberAbsorption (electromagnetic radiation)businessErbiumFibre lasersJournal of Applied Physics
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