Characterizations and Nonlinear-Optical Properties of Pentanary Transition-Metal Oxysulfide SrCoGeOS.

As one type of material containing multiple anions, oxysulfides can combine the advantages of oxides and sulfides and are deeply studied as nonlinear-optical (NLO) materials. Herein, a new melilite-type pentanary oxysulfide SrCoGeOS is studied. It crystallizes in the noncentrosymmetric tetragonal space group 4̅2, and its structure features GeOS and CoS tetrahedra-built {[CoGeOS]} layers.

NaGaSe: An Infrared Nonlinear Optical Material with Balanced Performance Contributed by Complex {[GaSe]} Anionic Network.

Second-order nonlinear optical (NLO) materials are extensively applied in laser-related techniques. For developing IR NLO materials, chalcogenides are the main candidates. Here, NaGaSe was explored as inspired by its unique anionic structure.

KEuInBS: a novel type of thioborate featuring BS cluster and unique InS 12-membered ring.

Both borates and sulfides are important inorganic multifunctional materials. Encouraged by this background, thioborates attract considerable interest. However, their investigations are highly hindered by the scarcity of the available ones and the synthetic difficulty of the new ones.

Structural Chemistry and Excellent Nonlinear Optical Properties of a Series of Ternary Selenides GaInSe.

Novel nonlinear optical (NLO) materials possessing simple chemical compositions and facile syntheses are competitive when considering their practical application. Here, a series of ternary selenides GaInSe ( = 0.07, 0.

Hexagonal InSe: A Defect Wurtzite-Type Infrared Nonlinear Optical Material with Moderate Birefringence Contributed by Unique InSe Unit.

The balance between second harmonic generation (SHG) intensity and laser-induced damage threshold (LIDT), together with phase-matchable behavior, is the key point for exploration of novel nonlinear optical (NLO) materials. In this work, the NLO property of defect wurtzite-type hexagonal-InSe (γ) is extensively explored first. It exhibits a strong SHG intensity of 2.