517.51
519.622.1

характеристична матриця
спектральні характеристики
спектр пропускання
неоднорідності показника заломлення
characteristic matrix
the spectral characteristics of the transmission spectrum
inhomogeneities of the refractive index

На даний час не вирішеною залишається проблема модельного представлення неоднорідностей в частково неоднорідних плівках при неперервній зміні показника заломлення на межах розділу. В роботі наведено узагальнені зміни параметрів спектрів пропускання багатошарових інтерференційних структур (БІС) широкосмугових оптичних фільтрів залежно від поляризації та кута падіння паралельних потоків випромінювання відносно нормалі до їх поверхні. Розроблено модель та досліджено вплив перехідної області з неоднорідним розподілом показника заломлення на спектральні характеристики широкосмугових фільтрів залежно від кута.
At present time there are still unsolved the problem of model representation of heterogeneity in slightly inhomogeneous films with continuous change of the refractive index at the interfaces. There are studies in frame of inhomogeneous layered model which does not reflect the angular and polarization dependences of the spectral characteristics of broadband filters. In this work generalized change of parameters of multilayer interference structures were obtained from the analysis of light transmission spectra. The angular and polarization dependences of transmission of multilayer interference structures (broadband interference filters, BIS) with inhomogeneities on interfaces have been investigated. There were shown changes in the parameters of transmission spectra are depending on polarization and angle of incidence parallel beams of radiation relative to the normal to the surface. The effect of the working wavelength change on the spectral characteristics of broadband optical filters was investigated. For calculation available working wavelength at 480, 630, 750, 1000 and 3000 nm are used. In the submitted paper the inhomogeneous model of the refractive index profile was developed, which includes transition region in high refractive index layer on interfaces. The spectral characteristics of broadband filters and its dependence on the incident angle and polarization of light, influence of transition layer on the interfaces between layers have been investigated. The basic parameters which are influenced on changing of transmission spectra of multilayer interference structures were found. The influence of operating wavelength changes on the spectral characteristics of broadband optical filters with the transition regions was investigated. The results are particularly relevant for determining the effectiveness of the use of convergence or divergence of the radiation beams in optical systems with such filters. The features of the spectral characteristics of the slightly inhomogeneous films with different types of refractive index distribution on interfaces and mathematical modeling can broaden the applicability of non-crystalline films during manufacturing of BIS.