TY - SER AU - Zinoviev,Mikhail M. AU - Yudin,Nikolay N. AU - Olshukov,Alexey S. AU - Davydova,Alexandra Yu TI - Multilayer antireflection optical coatings based on Nb, Si and Al oxides for nonlinear ZnGeP2 crystals KW - тонкие пленки KW - просветляющие покрытия KW - ионно-лучевое распыление KW - нелинейные кристаллы KW - дифосфид цинка-германия KW - статьи в журналах N1 - Библиогр.: 8 назв N2 - The effect of the designed antireflection coatings based on Nb2O5/Al2O3 and Nb2O5/SiO2 pairs of materials on the laser-induced damage threshold (LIDT) of ZnGeP2 crystals at a wavelength of 2097 nm is shown. The coating was applied using the ion-beam sputtering (IBS) method. The LIDT of the sample coated with Nb2O5/SiO2 was W0d = 1.8 J/cm2. The LIDT of a sample coated with Nb2O5/Al2O3 is W0d = 2.35 J/cm2. The presence of silicon conglomerates in the antireflection coating leads to a decrease the LIDT of a nonlinear crystal due to local thermomechanical stresses and scattering of the incident laser radiation UR - http://vital.lib.tsu.ru/vital/access/manager/Repository/koha:001009262 ER -