A₂Zn₃P₄S₁₃ (A = Rb and Cs): First Infrared Nonlinear Optical Materials with Mixed Thiophosphate Functional Motifs PS₄ and P₂S₆

Abstract

Two new IR NLO compounds, namely, Rb2Zn3P4S13 (1) and Cs2Zn3P4S13 (2), were obtained by introducing d10 closed-shell cation in an alkali-metal containing thiophosphate system. Compounds 1 and 2 are isostructural...

Rb2CdSi4S10: novel [Si4S10] T2-supertetrahedra-contained infrared nonlinear optical material with large band gap

“…[33][34][35][36][37] Whereas to create a large SHG response in sulfide, the [MS 4 ] (M = d 10 metals, IIIA, IVA and VA group elements) tetrahedra with strong covalent bonds could be used as the NLO-active units. [38][39][40][41] In addition, to achieve the desired balance between the wide E g and the large SHG response, the atomic coordination of AAEMs, unit-arrangement and the density of the NLO units should be carefully designed. 42 Recently, by grouping AAEMs and [Ga 4 S 10 ] T2-ST with or without electronegative halogens, several gallium sulfides with large E g s, such as [ABa 3 Cl 2 ][Ga 5 S 10 ] (A = K, Rb, Cs), 43 S1, ESI †), indicating that the [Si 4 S 10 ] T2-ST could also be a good NLO-active unit for the design of new IR-NLO materials with a large E g .…”

Quaternary alkaline-earth metal thiophosphate SrAgPS4: syntheses, structures, and optical properties

“…22–25 Meanwhile, alkali metals are typically considered to be beneficial for enlarging the band gap due to their fully filled d or f orbitals, which prevent d–d or f–f electronic transitions. AHgPS 4 (A = Na, K), 26 KAg 2 PS 4 , 27 KREP 2 Se 6 (RE = Sm, Gd, Tb), 28 A 2 Zn 3 P 4 S 13 (A = Rb and Cs), 29 and other alkali metal thiophosphates were evaluated as outstanding IR NLO candidates. Alkaline-earth metals have similar characteristics to alkali metals and are often used in the design of wide-band gap NLO materials.…”

Ga(IO3)3: a mid-IR nonlinear optical iodate with balanced performance between band gap and second harmonic generation response

“…Photoelectric functional crystals, which are widely used as core optical devices in solid state lasers, are of great significance for the development of modern laser technology. 1–3 Nonlinear optical (NLO) materials, typically KBe 2 BO 3 F 2 (KBBF), 4 β-BaB 2 O 4 (β-BBO), 5 α-LiIO 3 , 6 BaGa 4 S/Se 7 (BGS/BGSe), 7,8 etc. , can effectively realize frequency conversion and broaden the working wavelength using optical parameter oscillators, optical parameter amplification, frequency doubling, difference frequency generation, and so on, which make them widely useful in civil and military fields.…”