Polycrystalline lithium niobate powders were prepared by the sol-gel method. Different grain sizes were obtained by controlling the annealing temperature. The Eu3+ ion was used as a luminescent probe of the nonlinear optical properties of the grains. Strong red emission deriving from Eu3+ ions was observed under pulsed infrared laser irradiation at 936.0 nm due to absorption of the light produced in the second harmonic generation process. A measurable emission was observed only for grains having a size of the least 200 nm, depending on the annealing temperature

Infrared induced red luminescence of Eu3+-doped polycrystalline LiNbO3

SPEGHINI, Adolfo;BETTINELLI, Marco Giovanni;
2006-01-01

Abstract

Polycrystalline lithium niobate powders were prepared by the sol-gel method. Different grain sizes were obtained by controlling the annealing temperature. The Eu3+ ion was used as a luminescent probe of the nonlinear optical properties of the grains. Strong red emission deriving from Eu3+ ions was observed under pulsed infrared laser irradiation at 936.0 nm due to absorption of the light produced in the second harmonic generation process. A measurable emission was observed only for grains having a size of the least 200 nm, depending on the annealing temperature
FERROELECTRIC PARTICLES; OPTICAL-DETECTION; BARIUM-TITANATE
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11562/305242
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