Researchers develop nonlinear optical crystals by unusual cationic substitution strategy

https://phys.org/news/2023-10-nonlinear-optical-crystals-unusual-cationic.html

"2 non-centrosymmetric chalcogenides as excellent nonlinear optical crystals... cationic substitution resulting in salt-inclusion chalcogenides with diamond-like anionic frameworks... mixed cations introduced in GaS4 anionic frameworks resulted in wide band gaps and improved high laser-induced damage threshold (LIDT)... strong 2nd-harmonic generation intensities... wide transmittance range, impressive LIDT, sufficient birefringence index, bulk single-crystal form, and physicochemical stability"

Related: A 20 kW laser system for producing high-purity crystals

https://techxplore.com/news/2024-02-kw-laser-high-purity-crystals.html