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Information × Registration Number 0223U001780, 0122U200127 , R & D reports Title Chalcogenide nonlinear crystals for controlling the shape and propagation of impulses. popup.stage_title Head Hrabar Oleksandr O., Доктор фізико-математичних наук Registration Date 03-02-2023 Organization Uzhhorod National University State Higher Educational Institution popup.description2 New doped single crystal samples of Sn2P2S6 with high optical quality, as well as samples of anisotropic layered single crystals of CuInP2S6, were fabricated and used to study optical parameters. In photorefractive and optically biaxial Sn2P2S6 samples, the holographic interaction of laser beams from which the signal beam is formed under conical diffraction conditions was first studied. The selective amplification of the signal beam by changing the polarization azimuth of the reference laser beam and the recording of a quasi-stationary three-dimensional hologram were obtained. A study of the photorefractive effect in Sn2P2S6:Te crystals under pulsed excitation by an IR laser with a wavelength of 1064 nm was carried out. The high values of the two-wave interaction coefficient at nanosecond laser pulse duration were found, and the slowing down of the group velocity of such pulses in a holographic circuit was realized. The optical parameters and vibrational spectra in layered optically biaxial CuInP2S6 crystals have been studied  Product Description popup.authors Kohutych Anton Antonovych Pavlyshyn Roman Yevstahiyovych Shiposh Yuliya Ivanivna popup.nrat_date 2023-02-03 Close