Instruments and Systems: Monitoring, Control, and Diagnostics Annotation << Back Development of an Optical System for Processing Holographic Interferograms E.E. MAIOROV, T.A. CHERNYAK, G.A. TSYGANKOVA, A.CH. MASHEK, A.A. KONSTANTINOVA This paper a device for decoding holographic interferograms using a two-frequency laser is presented. The information retrieval from the holographic interferogram is considered in detail. The orientation of the planes of oscillation of vectors during the passage of the optical system is shown. The possibility of using two-frequency radiation for heterodyne phase-measuring systems for processing holographic interferograms is demonstrated. The dependence of the device settings for different aperture angles of the photodetector at λ = 0,6328 μm, d = 100 μm is shown. Information on the amplitude of the output signal when the relative angle between the plates changes: h = 10,0 mm and h = 12,0 mm. is given. The device calibration dependencies for different plate thickness h and the device sensitivity for different displacement values d are shown. Keywords: laser, polarization, interferogram, holographic interferometry, lens, polaroid, half-wave plate. DOI: 10.25791/pribor.07.2020.1190 Pp. 25-32.