Nonlinear response of photorefractive lithium tantalate and niobate at acoustic frequencies

Prudkovskii, P. A.; Skugarevskii, O. V.; Penin, A. N.

doi:10.1134/1.558369

Cited by 3 publications

(3 citation statements)

References 6 publications

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“…Fig. 6(b) shows an example prepared by reacting NbCl 5 with 4 eq of EtLi and heat-treated at 873 K. The Raman result also agrees with the formation of LiNbO 3 . 20 The signals from carbon contamination at approximately 1300 and 1600 cm -1 were reduced in the samples treated at increased temperatures.…”

Section: Resultssupporting

confidence: 84%

“…This enables direct M-O bond formation after a metathetic reaction between M-Cl and Li-OR bonds and facilitates elemental mixing at a molecular level in the precursors. This leads to the ultimate formation of LiTaO 3 and LiNbO 3 at low temperatures.…”

Section: Resultsmentioning

confidence: 97%

“…The stoichiometry relation between the metalchloride and the alkyllithium is different for the synthesis of LiNbO 3 and LiTaO 3 . In a series of precursor preparations, the ratios of TaCl 5 to EtLi were varied from 1:1 to 1:8.…”

Section: Resultsmentioning

confidence: 98%

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Tetrahydrofuran Activation Assisted Synthesis of Nanosized Lithium Niobate and Lithium Tantalate

Chien

Chang

Tsai

et al. 2006

Jnl Chinese Chemical Soc

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Black solid precursors obtained from reactions between MCl 5 (M = Nb, Ta) and alkyllithiums, n-butyllithium ( n BuLi) and ethyllithium (EtLi), in tetrahydrofuran (THF) were heat treated under vacuum at 673-973 K to form nano-sized particles (20-100 nm in diameter) of lithium niobate (LiNbO 3 ) and lithium tantalate (LiTaO 3 ). Stoichiometry of the reactants is critical and affects the phases of the products. Based on the volatile byproducts detected, a reaction pathway involving the activation of THF by alkyllithiums is proposed to be important for the formation of LiNbO 3 and LiTaO 3 precursors.

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Section: Resultssupporting

confidence: 84%

Section: Resultsmentioning

confidence: 97%

See 1 more Smart Citation

Tetrahydrofuran Activation Assisted Synthesis of Nanosized Lithium Niobate and Lithium Tantalate

Chien

Chang

Tsai

et al. 2006

Jnl Chinese Chemical Soc

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Anomalously Fast Response of Photorefractive Lithium Tantalate and Niobate

Prudkovskii

Skugarevskii²

CLEO/Europe Conference on Lasers and Electro-Optics

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Anomalously fast response of photorefractive lithium tantalate and niobate

Prudkovskii¹,

Skugarevskii²

1998

Conference on Lasers and Electro-Optics-Europe

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It is well known that in photorefractive lithium tantalate and niobate, photoinduced light scattering (PHILS) and holographic-type parametric scattering (HTPS) [1] are possible. In PHILS light is scattered by a set of random holographic gratings, and HTPS is scattering by a subset of these gratings satisfying the four-wave phase matching condition. The characteristic time of recording such gratings is defined by the Maxwell time τm ~ε/4πσ (here ε is the dielectric function and σ the electric conductivity of the crystal), which can vary in LiNbO3 and LiTaO3 from some minutes to many hours depending on the pump intensity.

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Nonlinear response of photorefractive lithium tantalate and niobate at acoustic frequencies

Cited by 3 publications

References 6 publications

Tetrahydrofuran Activation Assisted Synthesis of Nanosized Lithium Niobate and Lithium Tantalate

Tetrahydrofuran Activation Assisted Synthesis of Nanosized Lithium Niobate and Lithium Tantalate

Anomalously Fast Response of Photorefractive Lithium Tantalate and Niobate

Anomalously fast response of photorefractive lithium tantalate and niobate

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