Inversion of the longitudinal component of spin angular momentum in the focus of a left-handed circularly polarized beam

Автор: Nalimov Anton Gennadyevich, Kozlova Elena Sergeevna

Журнал: Компьютерная оптика @computer-optics

Рубрика: Дифракционная оптика, оптические технологии

Статья в выпуске: 5 т.44, 2020 года.

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It has been shown theoretically and numerically that in the sharp focus of a circularly polarized optical vortex, the longitudinal component of the spin angular momentum vector is inverted. Moreover, if the input light to the optical system is left-hand circularly polarized, it has been shown to be right-hand polarized in the focus near the optical axis. Since this effect occurs near the focus where a backward energy flow takes place, such an inversion of the spin angular momentum can be used to detect the backward energy flow.

Cпиновый угловой момент, spin angular momentum, right-hand circular polarization, optical vortex, backward energy flow, optical torque

Короткий адрес: https://sciup.org/140250040

IDR: 140250040   |   DOI: 10.18287/2412-6179-CO-761

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