Lithium niobate: Summary of physical properties and crystal structure

Weis, Rüdiger; Gaylord, Thomas K.

doi:10.1007/bf00614817

Cited by 1,570 publications

(851 citation statements)

References 48 publications

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“…In the non-irradiated part of the crystal, shown in the lower part of Fig. 2(b), we found that domains, when present, exhibited the typical underlying 3m crystal symmetry of LiNbO 3 [15] but they did hardly reflect the periodicity of the mask. In particular, most of the domains in the nontreated region were much larger than 5 μm, and only at their edges could the periodicity of the mask be seen.…”

Section: Resultsmentioning

confidence: 79%

Radiation-damage-assisted ferroelectric domain structuring in magnesium-doped lithium niobate

et al. 2009

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Irradiation of 5% magnesium-doped lithium niobate crystals (LiNbO 3 :Mg) with high-energy, low-mass 3 He ions, which are transmitted through the crystal, changes the domain reversal properties of the material. This enables easier domain engineering compared to non-irradiated material and assists the formation of small-sized periodically poled domains in LiNbO 3 :Mg. Periodic domain structures exhibiting a width of ≈520 nm are obtained in radiation-damaged sections of the crystals. The ferroelectric poling behavior between irradiated and non-treated material is compared.PACS 78.20 · 42.65

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Section: Resultsmentioning

confidence: 79%

Radiation-damage-assisted ferroelectric domain structuring in magnesium-doped lithium niobate

et al. 2009

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“…Lithium niobate has a trigonal crystal structure and is characterized by large pyroelectric, piezoelectric, electro-optic and photoelastic coefficients 19 . Although LiNbO 3 single crystal is important in broad areas of technological applications, the details of the physical properties and crystal structure are not readily available in literature.…”

Section: Structural Properties and Compositionsmentioning

confidence: 99%

Growth of Large Size Lithium Niobate Single Crystals of High Quality by Tilting-mirror-type Floating Zone Method

Sarker

2016

Mat. Res.

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Large size high quality LiNbO 3 single crystals were grown successfully by tilting-mirror-type floating zone (TMFZ) technique. The grown crystals were characterized by X-ray diffraction, etch pits density measurement, Impedance analysis, Vibrating sample magnetometry (VSM) and UV-Visible spectrometry. The effect of mirror tilting during growth on the structural, electrical, optical properties and defect density of the LiNbO 3 crystals were investigated. It was found that the defect density in the crystals reduced for tilting the mirror in the TMFZ method. The chemical analysis revealed that the grown crystals were of high quality with uniform composition. The single crystals grown by TMFZ method contains no low-angle grain boundaries, indicating that they can be used for high efficiency optoelectronic devices.

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“…pulse ordering that would seamlessly integrate with today's technology. Furthermore, lithium niobate is of particular interest due to its strong electro-optic effects [10] that enable amplitude and phase modulation of light, as well as its high refractive index that can be readily modified to enable optical waveguide applications [11][12][13]. The optical coherence properties of the 1.5 micron transition of bulk Er 3+ :LiNbO 3 crystals have also been studied for optical signal processing and quantum information applications [1,7,[14][15][16][17], providing a knowledge base for comparing with any changes in the properties of micro-and nano-structured materials.…”

Section: Introductionmentioning

confidence: 99%

Effects of mechanical processing and annealing on optical coherence properties ofEr3+:LiNbO3 powders

Lutz

Veissier

Thiel

et al. 2017

Journal of Luminescence

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Optical coherence lifetimes and decoherence processes in erbium-doped lithium niobate (Er 3+ :LiNbO3) crystalline powders are investigated for materials that underwent different mechanical and thermal treatments. Several complimentary methods are used to assess the coherence lifetimes for these highly scattering media. Direct intensity or heterodyne detection of two-pulse photon echo techniques was employed for samples with longer coherence lifetimes and larger signal strengths, while time-delayed optical free induction decays were found to work well for shorter coherence lifetimes and weaker signal strengths. Spectral hole burning techniques were also used to characterize samples with very rapid dephasing processes. The results on powders are compared to the properties of a bulk crystal, with observed differences explained by the random orientation of the particles in the powders combined with new decoherence mechanisms introduced by the powder fabrication. Modeling of the coherence decay shows that paramagnetic materials such as Er 3+ :LiNbO3 that have highly anisotropic interactions with an applied magnetic field can still exhibit long coherence lifetimes and relatively simple decay shapes even for a powder of randomly oriented particles. We find that coherence properties degrade rapidly from mechanical treatment when grinding powders from bulk samples, leading to the appearance of amorphous-like behavior and a broadening of up to three orders of magnitude for the homogeneous linewidth even when low-energy grinding methods are employed. Annealing at high temperatures can improve the properties in some samples, with homogeneous linewidths reduced to less than 10 kHz, approaching the bulk crystal linewidth of 3 kHz under the same experimental conditions.

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Lithium niobate: Summary of physical properties and crystal structure

Cited by 1,570 publications

References 48 publications

Radiation-damage-assisted ferroelectric domain structuring in magnesium-doped lithium niobate

Radiation-damage-assisted ferroelectric domain structuring in magnesium-doped lithium niobate

Growth of Large Size Lithium Niobate Single Crystals of High Quality by Tilting-mirror-type Floating Zone Method

Effects of mechanical processing and annealing on optical coherence properties ofEr3+:LiNbO3 powders

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