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This article is cited in 2 scientific papers (total in 2 papers)
OPTO-IT
Backward flow of energy for an optical vortex with arbitrary integer topological charge
V. V. Kotlyarab, A. A. Kovalevab, A. G. Nalimovab a Samara National Research University, Samara, Russia
b Image Processing Systems Institute of the RAS - Branch of the FSRC "Crystallography and Photonics" RAS, Samara, Russia
Abstract:
We analyze the sharp focusing of an arbitrary optical vortex with the integer topological charge m and circular polarization in an aplanatic optical system. Explicit formulas to describe all projections of the electric and magnetic fields near the focal spot are derived. Expressions for the near-focus intensity (energy density) and energy flow (projections of the Pointing vector) are also derived. The expressions derived suggest that for a left-hand circularly polarized optical vortex with $m > 2$, the on-axis backward flow is equal to zero, growing in the absolute value as a power $2(m-2)$ of the radial coordinate. These relations also show that upon the negative propagation, the energy flow rotates around the optical axis.
Keywords:
backward energy flow, optical vortex, rotating beams, Umov-Poynting vector.
Received: 29.03.2018 Accepted: 10.05.2018
Citation:
V. V. Kotlyar, A. A. Kovalev, A. G. Nalimov, “Backward flow of energy for an optical vortex with arbitrary integer topological charge”, Computer Optics, 42:3 (2018), 408–413
Linking options:
https://www.mathnet.ru/eng/co522 https://www.mathnet.ru/eng/co/v42/i3/p408
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Abstract page: | 151 | Full-text PDF : | 33 | References: | 17 |
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