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- W1552679215 endingPage "16650" @default.
- W1552679215 startingPage "16643" @default.
- W1552679215 abstract "The optical absorption and fluorescence of ${mathrm{Pr}}^{3+}$ ion in ${mathrm{LiNbO}}_{3}$ has been systematically investigated. This system is characterized by a very intense red emission at 620 nm corresponding to the $^{1}$${mathit{D}}_{2}$${ensuremath{rightarrow}}^{3}$${mathit{H}}_{4}$ transition. The luminescence of the metastable $^{3}$${mathit{P}}_{0}$ state is almost completely quenched in contrast with other materials. The nonradiative deexcitation has been analyzed for the $^{1}$${mathit{D}}_{2}$ multiplet in terms of a multiphonon process, and a quantum efficiency of 0.87 is experimentally deduced for this state at room temperature. Fluorescence quenching of $^{1}$${mathit{D}}_{2}$ is observed when concentration is increased, and a cross-relaxation process is proposed for concentrations above 0.09 mol %. The fluorescence decay time functions are well explained in the frame of the Inokuti and Hirayama model considering mainly an electric dipole-dipole interaction. It has been also concluded that praseodymium ions are randomly distributed in the ${mathrm{LiNbO}}_{3}$ host, so that local charge compensating Pr(${mathrm{Li}}^{+}$)-Pr(${mathrm{Nb}}^{5+}$) pairs must be disregarded." @default.
- W1552679215 created "2016-06-24" @default.
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- W1552679215 date "1995-06-15" @default.
- W1552679215 modified "2023-10-18" @default.
- W1552679215 title "Optical spectroscopy of<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant=normal>Pr</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>ions in<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>LiNbO</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:mrow></mml…" @default.
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- W1552679215 doi "https://doi.org/10.1103/physrevb.51.16643" @default.
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