Lithium tantalate
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Lithium tantalate photonic integrated circuits for volume manufacturing Open
Electro-optical photonic integrated circuits (PICs) based on lithium niobate (LiNbO 3 ) have demonstrated the vast capabilities of materials with a high Pockels coefficient 1,2 . They enable linear and high-speed modulators operating at co…
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Sodium Tantalate Photocatalysts Doped with Metal Cations: Why Are They Active for Water Splitting? Open
Sodium tantalate (NaTaO 3 ) is the first semiconductor photocatalyst that produces hydrogen–oxygen mixed bubbles in the overall water splitting reaction, when appropriately doped with metal cations. A series of studies are reviewed herein …
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Poling thin-film x-cut lithium niobate for quasi-phase matching with sub-micrometer periodicity Open
Quasi-phase-matched grating structures in lithium niobate waveguides with sub-micrometer periodicities will benefit the development of short-wavelength nonlinear optical devices. Here, we report on the reproducible formation of periodicall…
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Improved Photocatalytic Hydrogen Evolution on Tantalate Perovskites CsTaO<sub>3</sub> and LiTaO<sub>3</sub> by Strain-Induced Vacancies Open
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Terahertz parametric generation and amplification from potassium titanyl phosphate in comparison with lithium niobate and lithium tantalate Open
We report superior terahertz parametric generation from potassium titanyl phosphate (KTP) over congruent-grown lithium niobate (CLN) and lithium tantalate (CLT) in terms of parametric gain and laser damage resistance. Under the same pump a…
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Carbon Dioxide Sensor Module Based on NDIR Technology Open
In this paper, a gas detection system with an environmental compensation algorithm based on nondispersive infrared (NDIR) technology was designed. The prepared infrared pyroelectric detector was a dual-channel type based on the lithium tan…
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Characterization of Optical and Structural of Lanthanum Doped LiTaO<sub>3</sub>Thin Films Open
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Correlation of Electrical Properties and Acoustic Loss in Single Crystalline Lithium Niobate-Tantalate Solid Solutions at Elevated Temperatures Open
Electrical conductivity and acoustic loss Q−1 of single crystalline Li(Nb,Ta)O3 solid solutions (LNT) are studied as a function of temperature by means of impedance spectroscopy and resonant piezoelectric spectroscopy, respectively. For th…
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Ultrabroadband thin-film lithium tantalate modulator for high-speed communications Open
The continuous growth of global data traffic over the past three decades, along with advances in disaggregated computing architectures, presents significant challenges for optical transceivers in communication networks and high-performance…
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Performance of LiTaO3 Crystals and Thin Films and Their Application Open
Lithium tantalate (LiTaO3, or LT) crystal is widely used in optical applications, infrared detection, and acoustic surface wave devices because of its excellent piezoelectric, pyroelectric, and nonlinear optical properties. In this paper, …
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Solid solutions of lithium niobate and lithium tantalate: crystal growth and the ferroelectric transition Open
Specific heat capacity measurements by differential scanning calorimetry (DSC) of single crystals of solid solutions of LiNbO3 and LiTaO3 are reported and compared with corresponding ab initio calculations, with the aim to investigate the …
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Polaron-Mediated Luminescence in Lithium Niobate and Lithium Tantalate and Its Domain Contrast Open
In this review article, we discuss photoluminescence phenomena mediated by polarons in lithium niobate (LNO). At first we present the fundamentals on polaron states in LNO and their energy levels, i.e., on free and bound electron polarons,…
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Second harmonic generation of femtosecond laser written depressed cladding waveguides in periodically poled MgO:LiTaO<sub>3</sub> crystal Open
We report on the fabrication of depressed cladding waveguides in periodically poled MgO doped LiTaO3 by using low-repetition-rate femtosecond laser writing, and their use for guided-wave second harmonic generation (SHG). The cladding waveg…
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DC-stable electro-optic modulators using thin-film lithium tantalate Open
We demonstrate telecommunication-wavelength Pockels electro-optic modulators in thin-film lithium tantalate (TFLT) with superior DC stability compared to equivalent thin-film lithium niobate (TFLN) modulators. Less than 1 dB output power f…
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300 μJ, 3 W, few-cycle, 3 μm OPCPA based on periodically poled stoichiometric lithium tantalate crystals Open
We report a carrier–envelope-phase-stable 3 μm optical parametric chirped-pulse amplifier (OPCPA), based on periodically poled stoichiometric lithium tantalate nonlinear crystals, which delivers 306 μJ pulse energy at 10 kHz repetition rat…
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Efficient quasi-phase-matching in fan-out PPSLT crystal waveguides by femtosecond laser direct writing Open
We demonstrate second harmonic generations in quasi-phase matched cladding waveguide structures fabricated by direct femtosecond laser writing. Waveguides with circular section are inscribed in z-cut MgO doped stoichiometric lithium tantal…
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Swift heavy ion tracks in alkali tantalate crystals: a combined experimental and computational study Open
The formation of latent tracks with different damage morphologies in alkali tantalate crystals (KTaO 3 and LiTaO 3 ) under the action of the extreme electronic energy loss induced by 358 MeV 58 Ni 19+ irradiation was studied by experimenta…
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Tunable and stable micro-ring resonator based on thin-film lithium tantalate Open
As ferroelectric materials, lithium tantalate and lithium niobate share similar material characteristics, such as a high Pockels effect and nonlinear optical coefficients. When compared to lithium niobate, lithium tantalate offers a higher…
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A tunable CW UV laser with <35kHz absolute frequency instability for precision spectroscopy of Sr Rydberg states: supporting data Open
We present a solid-state laser system that generates over 200 mW of continuous-wave, narrowband light, tunable from 316.3 nm - 317.7 nm and 318.0 nm - 319.3 nm. The laser is based on commercially available fiber amplifiers and optical freq…
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Exploring the effect of boron on the grain morphology change and spectral properties of Eu <sup>3+</sup> activated barium tantalate phosphor Open
The effect of the grain morphology on the photoluminescence, charge transfer band, and decay properties was investigated by x Eu 3+ , y B 3+ ( x = 10 mol%, y = 0, 5, 15, 30, 50, 70, and 100 mol%) co-doped BaTa 2 O 6 ceramics fabricated by …
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Multi-watt, broadband second-harmonic-generation in MgO:PPSLT waveguides fabricated with femtosecond laser micromachining Open
We demonstrate optical waveguides fabricated in periodically poled MgO-doped stoichiometric lithium tantalate crystals using an fs-laser direct-write process. Two different waveguide architectures were developed: depressed cladding and str…
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Continuous Solitons in a Lattice Nonlinearity Open
We study theoretically and experimentally the propagation of optical solitons in a lattice nonlinearity, a periodic pattern that both affects and is strongly affected by the wave. Observations are carried out using spatial photorefractive …
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Crystallographic and optical study of LiNb<sub>1 − <i>x</i></sub>Ta<i><sub>x</sub></i>O<sub>3</sub> Open
Powders of lithium niobate-tantalate across the full compositional range have been made and crystals grown using a lithium vanadate flux growth technique. The Li-content of a lithium tantalate crystal has been determined using the zero-bir…
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On-chip ultraviolet second-harmonic generation in lithium-tantalate thin film microdisk Open
The compact and reliable ultraviolet (UV) source has attracted remarkable attention for its potential use in optical measurement systems, high-density optical storage, and biomedical applications. We demonstrate ultraviolet generation by f…
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Tunable perfect magnetic mirrors and retroreflectors in terahertz band Open
A magnetic mirror operating in the terahertz band is designed based on the functional reflective metasurface, which is simply constructed by a one-dimensional periodic lithium tantalate micro cylindrical rod array on a Teflon substrate coa…
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Relationship between the structure and optical properties of lithium tantalate at the zero-birefringence point Open
The structure of lithium tantalate powders has been investigated using neutron diffraction between room temperature and 445 K, which includes the zero-birefringence point. As the temperature increases, the displacement of the Ta atom from …
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Fabrication of lithium niobate fork grating by laser-writing-induced selective chemical etching Open
We propose and experimentally demonstrate a laser-writing-induced selective chemical etching (LWISCE) technique for effective micro-fabrication of lithium niobate (LN) crystal. Laser writing of LN crystal produces negative domains and doma…
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Orientation-Independent Yield Stress and Activation Volume of Dislocation Nucleation in LiTaO3 Single Crystal by Nanoindentation Open
Relying on nanoindentation technology, we investigated the elastic-to-plastic transition via first pop-in event and estimated the corresponding shear stress for incipient plasticity, i.e., yielding in the three typical orientations, i.e., …
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High-power actively Q-switched Ho-doped gadolinium tantalate laser Open
In this paper, we present the acousto-optical (AO) Q-switched performance of a holmium (Ho):gadolinium tantalate (GdTaO 4 ) (Ho:GTO) laser pumped by a thulium (Tm)-fiber laser emitting at 1.94 µm. In the efficient continuous wave (CW) regi…
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Theoretical Study of Monolayer and Double-Layer Waveguide Love Wave Sensors for Achieving High Sensitivity Open
Love wave sensors have been widely used for sensing applications. In this work, we introduce the theoretical analysis of the monolayer and double-layer waveguide Love wave sensors. The velocity, particle displacement and energy distributio…