Growth and spectroscopic characterization of Zr:Fe:LiNbO3 crystals with various Li/Nb ratios

Fan, Yexia; Xu, Chao; Xia, Shengji; Guan, Chengxiang; Cao, Liangcai; He, Qingsheng; Jin, Guofan

doi:10.1016/j.jcrysgro.2010.03.001

Cited by 15 publications

(4 citation statements)

References 25 publications

(29 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…With the increase of Li composition, the number of Zr − Nb defects is increased so the peak moves from 3473 to 3476 cm −1 . From the analysis above it is believed that this peak is a significant signal of Zr-doped Li-enriched LiNbO 3 crystals, which is consonant with our previous report [21]. Figure 2 shows the UV-visible absorption curves of Zr:Ru:Fe:LiNbO 3 with different Li composition.…”

Section: Resultssupporting

confidence: 88%

Investigation on the OH^− absorption and blue photorefractive properties in Zr:Ru:Fe:LiNbO_3 crystals as a function of Li composition

Lei

Zhu

et al. 2012

J. Opt. Soc. Am. B

Self Cite

View full text Add to dashboard Cite

A series of ZrO 2 -doped Ru:Fe:LiNbO 3 crystals with various Li composition were grown by conventional Czochralski technique. The OH − absorption spectra were measured, and the Lorentzian fitting was employed to analyze the defect structures. The photorefractive properties in these crystals were investigated as a function of Li/Nb ratios. The recording sensitivity of Li-enriched Zr:Ru:Fe:liNbO 3 crystal was 1.70 cm ∕J, and the diffraction efficiency was as high as 44.3%, while this crystal could withstand a laser intensity of 3.4 × 10 4 W ∕cm 2 at 476 nm irradiation. Experimental results definitely showed that Zr:Ru:Fe:LiNbO 3 crystals were promising blue photorefraction materials for holographic volume storage.

show abstract

Section: Resultssupporting

confidence: 88%

Investigation on the OH^− absorption and blue photorefractive properties in Zr:Ru:Fe:LiNbO_3 crystals as a function of Li composition

Lei

Zhu

et al. 2012

J. Opt. Soc. Am. B

Self Cite

View full text Add to dashboard Cite

show abstract

“…Therefore, zirconium ions are a preferable choice to improve the photorefractive properties of LN:Fe crystal. It was found that as the [Li]/[Nb] ratio increases, the distribution coefficients of Fe and Zr ions decrease, the absorption edge shifts to a shorter wavelength and the threshold concentration of ZrO 2 decreases [ 69 ]. Fan et al reported that NSLN:Zr,Fe crystals have significantly enhanced photorefractive response speed, recording sensitivity and two-wave coupling gain coefficient as compared with CLN:Zr,Fe, while the high saturation diffraction efficiency is still maintained [ 70 ].…”

Section: The Photorefraction Of Tetravalent Ions Co-doped Linbo mentioning

confidence: 99%

Recent Advances in the Photorefraction of Doped Lithium Niobate Crystals

Kong

Liu

2012

Materials

View full text Add to dashboard Cite

The recent advances in the photorefraction of doped lithium niobate crystals are reviewed. Materials have always been the main obstacle for commercial applications of photorefractive holographic storage. Though iron-doped LiNbO3 is the mainstay of holographic data storage efforts, several shortcomings, especially the low response speed, impede it from becoming a commercial recording medium. This paper reviews the photorefractive characteristics of different dopants, especially tetravalent ions, doped and co-doped LiNbO3 crystals, including Hf, Zr and Sn monodoped LiNbO3, Hf and Fe, Zr and Fe doubly doped LiNbO3, Zr, Fe and Mn, Zr, Cu and Ce triply doped LiNbO3, Ru doped LiNbO3, and V and Mo monodoped LiNbO3. Among them, Zr, Fe and Mn triply doped LiNbO3 shows excellent nonvolatile holographic storage properties, and V and Mo monodoped LiNbO3 has fast response and multi-wavelength storage characteristics.

show abstract

“…Наличие фотовольтаических активных примесей в виде многозарядных катионов переходных металлов (например, Fe), влияет на композиционную однородность и оптическую стойкость кристалла [3,[41][42][43]. Применяя двойное легирование, когда одна из добавок является " фоторефрактивной", возможно создавать материалы для оптики с минимальным временем фоторефрактивного отклика и повышенной стойкостью к оптическому повреждению [44].…”

Section: водородные связи в кристаллах Linbo 3 двойного легированияunclassified

Исследование Структурного Совершенства Монокристаллов Ниобата Лития Разного Состава И Генезиса Методом ИК Спектроскопии В Области Валентных Колебаний Водородных Связей

Бобрева¹,

Сидоров²,

Теплякова³

et al. 2022

Оптика И Спектроскопия

View full text Add to dashboard Cite

We have analyzed complex defects due to the presence of hydrogen bonds in the crystal structure in nominally pure lithium niobate crystals with different Li/Nb ratio, in crystals alloyed with magnesium and zinc in a wide concentration range (LiNbO3 : Mg (0.19-5.91 mol.% MgO) and LiNbO3 : Zn (0.04-6.5 mol. % ZnO)) and in the double-alloyed crystals (LiNbO3 : Y(0.24) : Mg(0.63 wt. %) and LiNbO3 : Gd (0.25) : Mg(0.75 wt. %)), obtained by technology of direct melt alloying, and also in the double-alloyed crystal (LiNbO3 : Mg(5. 05 mol.% MgO) : Fe(0.009 mol.% Fe2O3)) grown from a charge synthesized using the technology of homogeneous alloying with magnesium and iron Nb2O5. We revealed the influence of doping impurities on the concentration of OH-groups, the type and localization of complex defects in the crystal structure. The change in the number of hydrogen atom positions in the structure of the LiNbO3 crystal allow us to judge with sufficient accuracy whether the crystal composition is stoichiometric or congruent. For doped crystals of different compositions data were obtained testifying to changes in the character of complexation of OH-groups with point defects of the cationic sublattice with formation of defects: MеLi-OH-, MеLi-MеNb-OН. A change in the mechanism of entry of the dopant cation into the structure dramatically affects the change in the properties of the crystal.The difference in the frequencies (and, correspondingly, in the values of the quasi-elastic constants of the O-H bonds) in the spectrum of a congruent crystal and doped crystals can also be contributed by differences in the electronegativity and ionic radii of the principal and doping cations.

show abstract

Growth and spectroscopic characterization of Zr:Fe:LiNbO3 crystals with various Li/Nb ratios

Cited by 15 publications

References 25 publications

Investigation on the OH^− absorption and blue photorefractive properties in Zr:Ru:Fe:LiNbO_3 crystals as a function of Li composition

Investigation on the OH^− absorption and blue photorefractive properties in Zr:Ru:Fe:LiNbO_3 crystals as a function of Li composition

Recent Advances in the Photorefraction of Doped Lithium Niobate Crystals

Contact Info

Product

Resources

About