Lattice location of rare-earth ions in LiNbO3

Lorenzo, A.; Jaffrézic, H.; Roux, B.; Boulon, G.; García‐Solé, J.

doi:10.1063/1.115366

Cited by 130 publications

(79 citation statements)

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“…Rutherford backscattering experiments by Lorenzo et al 19 reported no occupancy of Nb 3+ sites, and our spectroscopy, polarization selection rule properties, and lineshape simulations all appear to be consistent with occupation of only Li + sites. In our experiments, as we shall see, the spectra manifested the basic polarization properties characteristic of the C 3 local symmetry of Li + sites.…”

Section: Methodssupporting

confidence: 61%

Optical decoherence and energy level structure of 0.1%Tm3+:LiNbO3

2012

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We report the energy level structure of the 3 H6 and 3 H4 multiplets for Tm 3+ doped congruent LiNbO3, as well as the decoherence properties and their temperature dependencies for the 3 H6(1) ↔ 3 H4(1a) transition at 794 nm. It is shown that this material provides very significant improvements in bandwidth, time-bandwidth product, and sensitivity for spatial-spectral holographic signal processing devices and quantum memories based on spectral hole burning. The available signal processing bandwidth for 0.1% Tm 3+ :LiNbO3 is 300 GHz versus 20 GHz for Tm 3+ YAG. The peak absorption coefficient for 0.1% Tm 3+ :LiNbO3 is 15 cm −1 at 794.5 nm compared with 1.7 cm −1 for 0.1% Tm:YAG at 793 nm, and the total absorption strength is eighty times stronger. The oscillator strength for Tm 3+ :LiNbO3 is about twenty five times larger than that for Tm 3+ :YAG, making the material five times more sensitive for processing high-bandwidth analog signals. The homogeneous linewidth, which determines processing time or spectrum analyzer resolution, is 30 kHz at 1.6 K and 350 kHz at 6 K, as measured by photon echoes. Those values establish potential time-bandwidth products of 10 7 and 7 ×10 5 respectively. The temperature dependence of the homogeneous linewidth was explained by observation of a 7.8 cm −1 crystal field level in the ground multiplet and direct phonon coupling. The excited state 3 H4 lifetime T1 is 152 µs and the bottleneck lifetime of the lowest 3 F4 level is 7 ms from photon echo measurements. These factors combine to provide a surprisingly large increase in key parameters that determine material performance for spatial-spectral holography, quantum information, and other spectral hole burning applications.

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Section: Methodssupporting

confidence: 61%

Optical decoherence and energy level structure of 0.1%Tm3+:LiNbO3

2012

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“…Furthermore, whereas in many oxide hosts the activator ions occupy well-defined substitutional sites, predictable on the basis of simple arguments based on the charge and the size of the dopant and the substituted ions, this is not the case for all materials. A notable example of this behavior is the non-linear host LiNbO 3 [42], which is of great interest for its ability to generate the second harmonic radiation of the light emitted from Ln 3? ions and for which the Ln 3?…”

Section: Energetics Of the Activator Ions And The Effect And Importanmentioning

confidence: 99%

Inorganic Phosphor Materials for Lighting

2016

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This chapter addresses the development of inorganic phosphor materials capable of converting the near UV or blue radiation emitted by a light emitting diode to visible radiation that can be suitably combined to yield white light. These materials are at the core of the new generation of solid-state lighting devices that are emerging as a crucial clean and energy saving technology. The chapter introduces the problem of white light generation using inorganic phosphors and the structureproperty relationships in the broad class of phosphor materials, normally containing lanthanide or transition metal ions as dopants. Radiative and non-radiative relaxation mechanisms are briefly described. Phosphors emitting light of different colors (yellow, blue, green, and red) are described and reviewed, classifying them in different chemical families of the host (silicates, phosphates, aluminates, borates, and non-oxide hosts). This research field has grown rapidly and is still growing, but the discovery of new phosphor materials with optimized properties (in terms of emission efficiency, chemical and thermal stability, color, purity, and cost of fabrication) would still be of the utmost importance.

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“…Since LN is a typical nonstoichiometric crystal, it contains specific structural vacancies (i.e., empty oxygen octahedra) [3] and other intrinsic defects in its crystal structure [4,5]. Therefore, various dopants ranging from the H + with valence +1 to the rare-earth cations with valence +3 can be introduced into the crystallographic frame occupying Li sites [6]. This wide range of dopants accounts for the attractive versatility for many important applications [7].…”

Section: Introductionmentioning

confidence: 99%

“…It seems to have become clear that the Li vacancy model is reasonable for describing the defect structure of nonstoichiometric LN single crystals [5], and that dopants prefer to occupy Li sites [6,13]-at least in the low-concentration regime (<6% molar content).…”

Section: Introductionmentioning

confidence: 99%

“…The defect structure and therewith-related properties of LN have been extensively studied [11,12]; numerous investigations concerning the lattice sites of dopants and their incorporation mechanisms [6,[13][14][15] have been performed. It seems to have become clear that the Li vacancy model is reasonable for describing the defect structure of nonstoichiometric LN single crystals [5], and that dopants prefer to occupy Li sites [6,13]-at least in the low-concentration regime (<6% molar content).…”

Section: Introductionmentioning

confidence: 99%

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Chemical bond analysis of the second-order nonlinear optical behaviour of Mg-doped lithium niobate

Xue

Betzler

Hesse

2000

J. Phys.: Condens. Matter

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Abstract. Second-order nonlinear optical properties of Mg-doped lithium niobate single crystals are quantitatively studied from the chemical bond viewpoint. The results show that the secondorder nonlinear optical response of Mg-doped LiNbO 3 single crystals at 1079 nm decreases linearly with increasing Mg concentration in the crystal. This linear correlation is quantitatively evaluated in the current work.

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Lattice location of rare-earth ions in LiNbO3

Cited by 130 publications

References 0 publications

Optical decoherence and energy level structure of 0.1%Tm3+:LiNbO3

Optical decoherence and energy level structure of 0.1%Tm3+:LiNbO3

Inorganic Phosphor Materials for Lighting

Chemical bond analysis of the second-order nonlinear optical behaviour of Mg-doped lithium niobate

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