Open AccessИсследование оптических нелинейных свойств объемного ZnSe для иммерсионных применений
Author(s) -
Н.А. Смирнов,
А.Е. Рупасов,
С.Н. Шелыгина,
А.О. Левченко,
М.С. Савинов,
С.И. Кудряшов
Publication year - 2022
Publication title -
optika i spektroskopiâ
Language(s) - English
Resource type - Journals
eISSN - 2782-6694
pISSN - 0030-4034
DOI - 10.21883/os.2022.04.52267.52-21
Subject(s) - materials science , wavelength , laser , optics , absorption (acoustics) , dielectric , pulse duration , irradiation , saturation (graph theory) , radiation , optoelectronics , physics , mathematics , combinatorics , nuclear physics , composite material
In this work, we study the nonlinear absorption of ultrashort laser pulses of variable duration (0.3–10 ps) in a bulk polycrystalline ZnSe dielectric. The transmission of the sample was measured for two wavelengths, 515 and 1030 nm, in a wide range of intensities. A nonlinear behavior of the transmission is found when the sample is irradiated with laser radiation at a wavelength of 515 nm with absorption saturation in the region of 3–5 TW/cm2. Surface damage thresholds were obtained for a wavelength of 1030 nm for pulse durations of 0.3–10 ps.