The element with the strongest electropositivity,Cs,was introduced into an anionic framework[Ga_(9)S_(16)]5−constructed from GaS4 tetrahedra,which are functional nonlinear optical motifs,to acquire the ternary noncent...The element with the strongest electropositivity,Cs,was introduced into an anionic framework[Ga_(9)S_(16)]5−constructed from GaS4 tetrahedra,which are functional nonlinear optical motifs,to acquire the ternary noncentrosymmetric sulphide Cs_(5)Ga_(9)S_(16)through solid-state reaction in a silica tube.Similar to classic LiGaS_(2),the three-dimensional phase Cs_(5)Ga_(9)S_(16)displayed prominent nonlinear optical performance,such as second-harmonic generation intensity(equal to LiGaS_(2))with phase-matching behaviour under incident laser irradiation at 1064 and 1910 nm,a wide band gap(3.81 eV)for a high laser-induced damage threshold(equal to LiGaS_(2)@1064 nm),and broad infrared transmittance transparency.Importantly,the Li-free Cs_(5)Ga_(9)S_(16)avoided the problem of corrosiveness to silica tubes at high temperatures similar to LiGaS_(2),suggesting that Cs_(5)Ga_(9)S_(16)could be a promising candidate for infrared nonlinear optical applications.展开更多
基金supported by the National Natural Science Foundation of China(Grant No.21827813,21921001,22175172,22075283,92161125)the Youth Innovation Promotion Association of Chinese Academy of Sciences(Grant No.2020303,2021300)+1 种基金the Natural Science Foundation of Fujian Provinces,China(Grant No.2020J01115)Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China(Grant no.2021ZR205).
文摘The element with the strongest electropositivity,Cs,was introduced into an anionic framework[Ga_(9)S_(16)]5−constructed from GaS4 tetrahedra,which are functional nonlinear optical motifs,to acquire the ternary noncentrosymmetric sulphide Cs_(5)Ga_(9)S_(16)through solid-state reaction in a silica tube.Similar to classic LiGaS_(2),the three-dimensional phase Cs_(5)Ga_(9)S_(16)displayed prominent nonlinear optical performance,such as second-harmonic generation intensity(equal to LiGaS_(2))with phase-matching behaviour under incident laser irradiation at 1064 and 1910 nm,a wide band gap(3.81 eV)for a high laser-induced damage threshold(equal to LiGaS_(2)@1064 nm),and broad infrared transmittance transparency.Importantly,the Li-free Cs_(5)Ga_(9)S_(16)avoided the problem of corrosiveness to silica tubes at high temperatures similar to LiGaS_(2),suggesting that Cs_(5)Ga_(9)S_(16)could be a promising candidate for infrared nonlinear optical applications.
