(Na<sub>0.60</sub>Ba<sub>0.70</sub>)Ga<sub>2</sub>Se<sub>4</sub>: An Infrared Nonlinear Optical Crystal Designed using AgGaSe<sub>2</sub> as the Template
Yanan Li, Huaiguo Xue, Sheng‐Ping Guo
Abstract
A novel quaternary selenide (Na0.60Ba0.70)Ga2Se4 (1) obtained by a high-temperature method crystallizes in the non-centrosymmetric space group I4cm, and its structure features {[GaSe2]−}∞ chains. It exhibits phase-matchable second-harmonic generation responses with the largest intensity of 0.3 times that of AgGaS2, and its powder sample has a laser-induced damage threshold of ∼2.4 times that of AgGaS2. Discussion about its relationship with other highly related structures are addressed as well. Theoretical calculations are performed to analyze its electronic structure and optical properties.
Topics & Concepts
ChemistryInfraredNonlinear opticalCrystal (programming language)Infrared spectroscopyAnalytical Chemistry (journal)Nonlinear systemCrystallographyOpticsPhysicsChromatographyComputer scienceQuantum mechanicsProgramming languageOrganic chemistryCrystal Structures and PropertiesChalcogenide Semiconductor Thin FilmsSolid-state spectroscopy and crystallography