Bulk Growth and Characterization of a Novel Nonlinear Optical Crystal BaTeMo₂O₉

Abstract

A new nonlinear optical crystal BaTeMo2O9 was grown from the TeO2−MoO3 flux system with sufficient size (30 × 23 × 18 mm3) and optical quality that allowed the characterization of its properties. It crystallizes in the noncentrosymmetrical system, space group P21 (no. 4), with a = 5.5346 Å, b = 7.4562 Å, c = 8.8342 Å, and β = 90.897°. The as-grown BaTeMo2O9 crystal has well-developed faces with the major forms {100}, {001}, {011}, and {011̅}. The transmission spectra results suggest that it can transmit well from 0.5 to 5.0 µm. The refractive indices were also measured. The smaller refractive indices nx and ny are in the ac-plane, and the largest refractive index nz polarization direction is parallel to the crystallographic b-axis.

Synthesis, structural and vibrational properties of microcrystalline RbNd(MoO4)2

“…The molybdates MLn(MoO 4 ) 2 are excellent Ln-doped laser hosts [9]. Due to strong distortion of MoO 6 octahedrons many molybdates are characterized by noncentrosymmetric crystal structure [1,2,[10][11][12][13][14]. Complex molybdates containing Ln 3 + ions in low-symmetry positions are promising for the creation of new effective laser mediums [14][15][16][17][18].…”

First-principles study of the ferroelectric and optical properties of BaTeMo2O9

“…They observed the extremely strong power second-harmonic generation (SHG) efficiencies (about 600 × SiO 2 ) which attributes from the polarization attributing to the Te 4+ -O and Mo 6+ -O bonds constructively add [9]. In 2007, single crystal BaTeMo 2 O 9 (space group P2 1 , a = 5.5346Å, b = 7.4562, c = 8.8342Å,ˇ= 90.897 • , Z = 2) was synthesized from a TeO 2 -MoO 3 system by the flux method by Tao et al [10]. As a multifunctional NCS compound, the refractive index, electro-optic tensor, dielectric and piezoelectric properties of single crystal BaTeMo 2 O 9 were also measured by them [10][11][12].…”

“…In 2007, single crystal BaTeMo 2 O 9 (space group P2 1 , a = 5.5346Å, b = 7.4562, c = 8.8342Å,ˇ= 90.897 • , Z = 2) was synthesized from a TeO 2 -MoO 3 system by the flux method by Tao et al [10]. As a multifunctional NCS compound, the refractive index, electro-optic tensor, dielectric and piezoelectric properties of single crystal BaTeMo 2 O 9 were also measured by them [10][11][12]. Their experimental data revealed that BaTeMo 2 O 9 is not only a potential nonlinear optical crystal but also a promising piezoelectric material.…”

Growth and characterization of nonlinear optical telluromolybdate CoTeMoO 6 single crystals

“…Particularly interesting NLO crystals are compounds containing Mo 6 þ or W 6 þ and cations with nonbonded electron pairs such as Se 4 þ and Te 4 þ since these cations may exhibit the second-order Jahn-Teller (SOJT) effect, which leads to the noncentrosymmetric structure and strong NLO properties in some telluromolybdates, for instance β-BaTeMo 2 O 9 [1][2][3][4][5][6][7][8]. One of promising family of telluromolybdates are ATeMoO 6 compounds (A¼Mg, Zn, Mn, Co), which crystallize in noncentrosymmetric orthorhombic crystal system with space group P2 1 2 1 2 [9][10][11][12][13].…”