Kostyukova, Nadezhda Y., Boyko, Andrey A., Erushin, Evgenii Y., Kostyukov, Anton I., Badikov, Valeriy V., Badikov, Dmitrii V., and Kolker, Dmitry B.
We investigated the laser-induced damage threshold of two barium chalcogenides crystals, BaGa_4Se_7 and BaGa_2GeSe_6, at 1.053 μm radiation with a pulse duration of 7–10 ns at different pulse repetition rates, namely, 100 Hz, 500 Hz, and 1 kHz. The R-on-1 procedure was applied to determine the 0% probability damage threshold. Both crystals have close values of surface damage threshold at 0.1 kHz, 299 MW/cm^2 (2.28 J/cm^2) for BaGa_2GeSe_6, and 319 MW/cm^2 (2.30 J/cm^2) for BaGa_4Se_7.