A combination of multiple chromophores enhances second-harmonic generation in a nonpolar noncentrosymmetric oxide: CdTeMoO6

Growth and characterization of nonlinear optical telluromolybdate CoTeMoO 6 single crystals

“…Our data suggest, therefore, that CoTeMoO 6 crystal is expected to exhibit stronger SHG response than its manganese analogue. Although our present data do not give information on phase matching behavior of d 14 in CoTeMoO 6 , type-I phase matchable behavior at 1064 nm was found for isostructural ZnTeMoO 6 and MnTeMoO 6 as well as closely related CdTeMoO 6 [11,13,14]. It is therefore very likely that CoTeMoO 6 will also show phase matching behavior.…”

“…It is worth noting that single crystals growth was also reported for closely related CdTeMoO 6 , which however crystallizes with space group P42 1 m [14]. Optical measurements also indicated that ATeMoO 6 crystals (A¼Mg, Zn, Cd) are transparent from about 0.35 to 5.4 μm [12][13][14]. MnTeMoO 6 is also transparent in a broad wavelength range, except of the 0.47-0.52 μm range [11].…”

“…Among this family of compounds, single crystal growth was reported recently for Mn, Zn and Mg compounds and it has been shown that these crystals display a large second harmonic generation (SHG) response of approximately 0.7, 1.1 and 1.5 Â KTP, respectively [11][12][13]. It is worth noting that single crystals growth was also reported for closely related CdTeMoO 6 , which however crystallizes with space group P42 1 m [14]. Optical measurements also indicated that ATeMoO 6 crystals (A¼Mg, Zn, Cd) are transparent from about 0.35 to 5.4 μm [12][13][14].…”

Nonpolar Na 10 Cd(NO 3 ) 4 (SO 3 S) 4 Exhibits a Large Second-Harmonic Generation

“…A variety of polar NLO materials have been discovered or predesigned, such as BaTeM 2 O 9 (M = Mo and W), 6 Li 2 ZrTeO 6 , 7 Rb 2 CdBr 2 I 2 , 8 ABi 2 (IO 3 ) 2 F 5 (A = K, Rb, and Cs), 9 LiM(IO 3 ) 3 (M = Zn and Cd), 10 18 In comparison, there are much fewer nonpolar NLO materials with strong SHG responses. 19,20 Elemental substitution is a common but effective strategy to design novel NLO-active anionic groups and new NLO materials with enhanced SHG responses. For example, the substitution of oxygen by the much more electronegative fluorine gives rise to novel oxyfluoride NLO-active units, such as BO 3 F, [21][22][23] BO 2 F 2 , 24 PO 3 F, 25,26 as well as the emerging SO 3 F, 27 and SiO 5 F, 28 resulting in polar NLO materials, such as NH 4 B 4 O 6 F, 23 MB 5 O 7 F 3 (M = Ca and Sr), 21,22 (NH 4 ) 2 PO 3 F, 25,26 C(NH 2 ) 3 SO 3 F, 27 and CsSiP 2 O 7 F. 28 Recently, the substitution of oxygen by the less electronegative sulfur also led to several polar NLO materials, such as CaCoSO, 29 SrZn 2 S 2 O, 30 and Sr 6 Cd 2 Sb 6 O 7 S 10 .…”

Two new tellurite halides with cationic layers: syntheses, structures, and characterizations of CdPb2Te3O8Cl2 and Cd13Pb8Te14O42Cl14

“…The tellurium( iv ) atom can be coordinated with 3-, 4- and 5-oxygen atoms to form TeO 3 , TeO 4 and TeO 5 polyhedral units, which can be further interconnected to form various tellurium( iv ) oxides, such as one dimensional (1D) chains, two dimensional (2D) layers and three dimensional (3D) frameworks, showing abundant structural diversity and adjustable photoelectric properties. 8–11 Therefore, over the past decades, a great number of metal tellurites, such as MTeMoO 6 (M = Cd, Mg, and Zn), 12–14 BaMo 2 TeO 9 , 15 Na 2 W 2 TeO 9 , 16 Bi 2 TeO 5 , 17 Co 3 TeO 6 , 18 Li 2 Ni 2 TeO 6 , 6 Mg 3 TeO 6 , 19 InNb(TeO 4 ) 2 , 20 Hg 2 Cu 3 (Te 3 O 8 ) 2 , 21 Li 2 MTeO 6 (M = Ti and Sn), 22 and Ba(MoO 2 F) 2 (QO 3 ) 2 (Q = Se and Te) 23 have been designed and fabricated.…”