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Information × Registration Number 0212U008338, 0112U008108 , R & D reports Title The single crystals and photonic materials for optical vortices generation popup.stage_title Head Vasylkiv Yurii Vasylyovych, Registration Date 11-01-2013 Organization Institute of Physical Optics named after O.G. Vlokh of Ministry of Education and Science of Ukraine popup.description2 It is established, that the generation of optical vortices in the parallel beams with near plane front carried out using the system of "right-handed circular polarizer - twisted crystal - left-handed circular polarizer" based on the crystals belonging to the m3m, m3, 23, 432, _43m, 3m, _3m, 32, 3 and _3 point symmetry groups. It was shown that optical vortex of topological charge equal to unity there is only provided when torque is applied to the crystal around the third order axis. It was found that the efficiency of spin-orbital conversion can be operated by changing the value of the torque applied to the crystal. Also it was determined that the efficiency of spin-orbital conversion is directly proportional to the refractive index in the third power of the material and its effective piezooptic coefficient. It was revealed that the highest spin-to-orbital conversion efficiency have LiNbO3, b-BaB2O4 and a-BaB2O4 crystals. Product Description popup.authors Влох Ростислав Орестович Костирко Мирослав Євгенович Скаб Ігор Петрович popup.nrat_date 2020-04-02 Close