Search academic texts

Information × Registration Number 0219U100715, 0118U003899 , R & D reports Title Entanglement quantum states of photons at collinear acousto-optic diffraction taking into account the anisotropy of interaction and optical activity popup.stage_title Head Skab Ihor P., Доктор фізико-математичних наук Registration Date 01-03-2019 Organization Vlokh Institute of Physical Optics popup.description2 The project is aimed at solving two related problems - the search for highly effective geometries of the collinear acousto-optic interaction on the basis of anisotropy analysis of the acousto-optic figure of merit (AOFM) and the detection and investigation of the quantum entanglement of photons at collinear acousto-optic interaction and spin-orbit transformation in optically active crystals. The analysis of AOFM anisotropy for CdS, NH4H2PO4 (ADP), KH2PO4 (KDP) and Li2B4O7 crystals has been carried out, and the conditions of the collinear acousto-optic interaction have been determined, in which the maximum values of AOFM can be achieved. For CdS and Li2B4O7 crystals the maximum value of AOFM is 26.25×10-15s3/kg and 0.26×10-15s3/kg respectively for acousto-optic interaction with a quasi-transverse acoustic wave QT2. For NH4H2PO4 crystals the AOFM value is 4.4×10-15с3/kg and for KH2PO4 this value is slightly lower - 1.2×10-15с3/kg. The influence of the deviation of polarization states of acoustic waves on the anisotropy of AOFM under acoustooptical interaction in the main crystallographic planes in Tl3AsS4, KH2PO4 and NH4H2PO4 crystals was analyzed. Correlation is obtained that describes the effective elastoptic coefficient for six types of isotropic interactions, taking into account the angle of deviation of the polarization of acoustic waves from pure longitudinal and transverse waves and without it being taken into account. For Tl3AsS4 crystals the deviation of the polarization of acoustic waves from the main state affects the anisotropy of the AOFM only at acousto-optic interaction with the QT wave. The geometries of acousto-optic interactions are determined, at which the highest values of AOFM for Tl3AsS4, KH2PO4 and NH4H2PO4 crystals are achieved. In f ADP crystals for a longitudinal acoustic wave propagating in the main crystallographic plane, the presence of a significant deviation of the displacement vector from a pure longitudinal state causes AOFM decreasing Product Description popup.authors Adamenko Dmytro I. Vasylkiv Yurii V. Vlokh Rostyslav O. Dudok Taras G. Kostyrko Myroslav Ye. Kryvyy Taras T. Krupych Oleg M. Martynyuk-Lototska Iryna Y. Mys Oxana G. Padlyak Taras B. Romanyuk Galyna M. Savaryn Viktoriya Ivanivna Say Andriy S. Skab Ihor P. popup.nrat_date 2020-04-02 Close