IR transmission spectra of multilayer heteroepitaxial structures K. O. Boltar, N. I. Yakovleva, A. V. Nikonov Orion R&P Association, 46/2 Enthusiasts hay way, Moscow, 111123, Russia E-mail: orion@orion-ir.ru The IR transmission spectrum simulation based on the Abel matrix method has been developed to determine photosensitive layers characteristics. <...> This mathematical model depends on the absorption coefficient and a number of parameters, which characterize the properties of the substrate and HgCdTe HES layers. <...> The model allows to calculate the HgCdTe initial photosensitive layers characteristics such as thicknesses of photosensitive and buffer layers d. and compositions of the photosensitive layers. <...> The IR transmission spectra of MCT multilayer heteroepitaxial structures grown both LPE and MBE methods have been measured and investigated. <...> PACS: 42.79.Pw, 85.60.Gz, 07.57.Kp, 85.60.Dw Keywords: IR transmission spectrum, CdHgTe, epitaxial layers, liquid-phase epitaxy, molecular beam epitaxy. <...> ЭС КРТ р-пшпа проводимости выращивались методами жидкофазной эпитаксии (ЖФЭ) на подложках CdZnTe и молекулярно-лучевой эпитаксии (МЛЭ) на подложках GaAs! <...>