Search results for "Linear optics"

showing 3 items of 493 documents

NONLINEAR OPTICS Nonlinear virtues of multimode fibre

2015

The finding that multimode optical bres support a rich and complex mix of spatial and temporal nonlinear phenomena could yield a plethora of promising applications.

optical fibersnonlinear opticsmultimode fibers; optical fibers; graded-index multimodegraded-index multimodeNonlinear Sciences::Pattern Formation and Solitonsmultimode fibers
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Long-transient conoscopic pattern technique

1999

0038-1098; Recent results on laser induced anisotropy in terbium gallium garnet are extended to the dynamic regime. We observed that the characteristic conoscopic pattern formation time presents a quadratic dependence on the beam size. The observed pattern intensity is accounted for by a simple analytical formula. The transient refractive index change due to thermal stress in the terbium gallium garnet is determined. (C) 1999 Elsevier Science Ltd. All rights reserved.

optical propertiesheat capacityPhysics::OpticsPattern formation02 engineering and technologyTERBIUM-GALLIUM GARNET01 natural sciencesTerbium gallium garnetlaw.invention010309 opticsCondensed Matter::Materials Sciencechemistry.chemical_compoundOpticslaw0103 physical sciencesMaterials ChemistryBirefringenceCondensed matter physicsbusiness.industrynonlinear opticsNonlinear opticsGeneral Chemistry021001 nanoscience & nanotechnologyCondensed Matter PhysicsLaserIntensity (physics)chemistryTransient (oscillation)0210 nano-technologybusinessRefractive index
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Symmetry breaking in ligand-protected gold clusters probed by nonlinear optics

2016

The first hyperpolarizabilities of [Au25(SR)18](-1/0) and Au38(SR)24 clusters were determined by Hyper-Rayleigh Scattering. A strong dependence on the molecular symmetry was observed, and we explore two strategies to destroy the center of inversion in [Au25(SR)18](-1/0), protection by chiral ligands and alloying of the cluster with silver. This may open new avenues to applications of Au : SR clusters in second-order nonlinear optics.

ta114Condensed matter physicsligandsChemistryScatteringLigandnonlinear opticsNonlinear optics02 engineering and technology010402 general chemistry021001 nanoscience & nanotechnologygold clusters01 natural sciencesMolecular physics0104 chemical sciencesmolecular symmetryMolecular symmetryCluster (physics)General Materials ScienceSymmetry breaking0210 nano-technologyta116Nanoscale
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