La6Cd0.75Ga2Q11.5Cl2.5 (Q = S and Se): two new nonlinear optical chalcohalides with a large laser-induced damage threshold

Two new nonlinear optical chalcohalides La₆Cd_0.75Ga₂Q_11.5Cl_2.5 (Q = S and Se) with good NLO performance are reported, which shows the benefits of the introduction of Cl-atoms in enhancing polarization and LIDTs.