Nonlinear optical properties of a new polar bismuth tellurium oxide fluoride, Bi3F(TeO3)(TeO2F2)3

From AgTeO2F and Ag2(TeO2F2) to Ag3F3(TeF6)(TeO2)12: the first silver tellurite oxyfluorides with linear and nonlinear optical properties

“…Fluorine-containing tellurite compounds (or tellurite oxyfluorides) can be classified into fluoride tellurites and fluorotellurites according to the connection mode of the fluorine element. In fluorotellurites, the fluorine atoms are connected with the lone pair cation of Te( iv ); in other words, there are Te( iv )–F bonds in the structures, such as Bi 3 F(TeO 3 )(TeO 2 F 2 ) 3 42 and HgTeO 2 F(OH). 43 BaF 2 TeF 2 (OH) 2 is the first reported SHG material in metal fluorotellurites, which has proved to be a promising UV nonlinear optical material.…”

Four UV Transparent Linear and Nonlinear Optical Materials Explored from Pure Selenite Compounds

“…[ 19–21 ] In the past few decades, researchers have made numerous attempts to combine large SHG response‐wide bandgap‐moderate birefringence in a single selenite structure. The introduction of d 0 transition metals (Ti 4+ , Zr 4+ , V 5+ , Nb 5+ , Mo 6+ , W 6+ , etc) [ 22,23 ] and lone pair cations (Pb 2+ , Bi 3+ , Sb 3+ , etc) [ 21,24,25 ] into the selenite system has led to the synthesis of a series of selenite compounds with strong SHG response, such as K 2 (WO 3 ) 3 (SeO 3 ) (9 × KDP, 3.24 eV), [ 26 ] NaNbO(SeO 3 ) 2 (7.8 × KDP, 3.65 eV), [ 27 ] Pb 2 Bi(SeO 3 ) 2 Cl 3 (13.5 × KDP, 3.45 eV), [ 19 ] and Pb 3 (SeO 3 ) 2 Br 4 (1 × KDP, 3.35 eV). [ 28 ] However, an unexpected UV absorption prevents their use in the UV region.…”

Metal Methanesulfonates with Mixed Anionic Groups with Large Band Gaps and Enhanced Birefringence

“…To gain a deeper insight into the impact of the CH 3 SO 3 – anion on band gaps and birefringence, a further comparison of these properties among reported bismuth selenites/tellurites and barium tetrafluoroborates is presented in Table . For bismuth selenites/tellurites, it is evident that the band gaps of Bi 2 O 2 (SeO 3 ), Bi 2 (SeO 3 ) 3 , and Bi 2 O 2 (TeO 3 ) do not surpass 3.50 eV. , When incorporating other anions such as F – , NO 3 – , SO 4 2– , BO 4 5– , and CH 3 SO 3 – , the band gaps exhibit varying degrees of enlargement. ,− In particular, compound 1 boasts the largest band gap at 3.90 eV. And compound 2 , with a band gap of 3.67 eV, only falls short of Bi 3 F(TeO 3 )(TeO 2 F 2 ) 3 (3.85 eV) within the bismuth tellurates .…”