6533b832fe1ef96bd129abcc
RESEARCH PRODUCT
Induced optical absorption and ITS relaxation in LiNbO3
K. PolgárGábor CorradiLarisa GrigorjevaDonāts MillersVladimir Pankratovsubject
Nuclear and High Energy PhysicsRadiationExtended X-ray absorption fine structureAbsorption spectroscopyChemistryLithium niobateRelaxation (NMR)Analytical chemistryPhysics::OpticsCondensed Matter PhysicsTwo-photon absorptionCrystalchemistry.chemical_compoundCondensed Matter::SuperconductivityUltrafast laser spectroscopyGeneral Materials ScienceAbsorption (electromagnetic radiation)description
Abstract Electron pulse induced absorption spectra and their decay kinetics have been investigated in LiNbO3 crystals with various Li/Nb ratios rasnging from congruent to stoichiometric composition. It is shown that the absorption spectra, the optical density and the decay kinetics depend on the Li/Nb ratio. The rising front of the induced absorption is too fast to be resolved. The room temperature decay, characterized by the half-lifetime Δt, is faster in the stoichiometric crystal (∼ 750 ns) than in the congrruent crystal (∼ 3.5 μs).
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1999-11-01 | Radiation Effects and Defects in Solids |