Top‐seeded growth, optical properties and theoretical studies of noncentrosymmetric Te₂V₂O₉

Abstract

A single crystal of Te2V2O9 with dimensions of 15×15×5 mm3 has been grown by the top‐seeded growth method. Infrared and transmission spectra indicate the transmission cutoff wavelength of Te2V2O9 crystal is about 620 nm in visible region and 6.2 μm in infrared region. In addition, band structure and density of states calculations of Te2V2O9 were carried out using the total‐energy code CASTEP based on density functional theory. (© 2012 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

Recent Advances in Infrared Nonlinear Optical Crystal

“…Several new NLO oxide crystals were identified, which have high IR cutoff wavelengths that are up to 6 μm. For instance β-BaTeMo 2 O 9 [53], MnTeMoO 6 [54], Cs 2 TeW 3 O 12 [55], V 2 Te 2 O 9 [56], Li 3 VO 4 [57] , M 2 LiVO 4 (M = Rb, Cs) [58], Li 2 K 4 TiOGe 4 O 12 [59], and Rb 4 Li 2 TiOGe 4 O 12 [60]. Moreover, for the oxide-based NLO material, IR transparent range is a difficult factor to attain.…”

Three in one: a cadmium bismuth vanadate NLO crystal exhibiting a large second-harmonic generation response and enhanced birefringence

“…Inorganic vanadate materials hold prominence in electrochemical energy storage, catalysts, electronic devices, and laser science as they exhibit good ionic conductivity, catalytic abilities, electrical properties, and nonlinear optical (NLO) properties, rendering them a subject of sustained interest. [1][2][3][4] Structurally, vanadate exhibits a variety of coordination geometries, including [VO 4 ] tetrahedra, [VO 5 ] pyramids, and [VO 6 ] octahedra, capable of forming frameworks spanning zerodimensional (0D) to three-dimensional (3D) ones. [5][6][7] It is worth noting that the combined characteristics and spatial arrangement of these structural primitives influence certain intrinsic properties associated with the structure, particularly as exemplified in the realm of NLO crystals.…”

Recent Advances in Oxide‐based Nonlinear Optical Materials with Wide Infrared Transparency Beyond 6 μm

“…Nevertheless, in the past two decades, several new attractive NLO oxides with relatively large IR cutoff edges (up to about 6 μm) have been discovered and grown to large crystals. A few representative examples include β ‐BaTeMo 2 O 9 , [30] MnTeMoO 6 , [31] Cs 2 TeW 3 O 12 , [32] V 2 Te 2 O 9 , [33] Li 3 VO 4 , [34] M 2 LiVO 4 (M=Rb, Cs), [35] Li 2 K 4 TiOGe 4 O 12 , [36] and Rb 4 Li 2 TiOGe 4 O 12 [37] . Moreover, as the comparably low absorption frequency of I−O bonds (around 805 cm −1 ) in iodates is conductive to expand the IR transparency, metal iodates were suggested as potential sources for mid‐IR NLO materials [38] .…”