Method for generating multiple solid focuses through vortex-carrying self-focusing light beam

The invention provides a method for generating a plurality of solid focuses by using a vortex-carrying self-focusing light beam, which comprises the following steps of: superposing two-dimensional focal scattered fields with different azimuth angles, forming light field distribution under paraxial a...

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Bibliographic Details
Main Authors ZHANG CHUANHOU, WU HAIXIA, LIANG YI, JIN YALONG, DENG SHENGYU, LIANG JIAFANG, LIU NANA
Format Patent
LanguageChinese
English
Published 11.06.2024
Subjects
CINEMATOGRAPHY
ELECTROGRAPHY
HOLOGRAPHIC PROCESSES OR APPARATUS
HOLOGRAPHY
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHOTOGRAPHY
PHYSICS
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Summary:The invention provides a method for generating a plurality of solid focuses by using a vortex-carrying self-focusing light beam, which comprises the following steps of: superposing two-dimensional focal scattered fields with different azimuth angles, forming light field distribution under paraxial approximation by using Fresnel diffraction integral, and generating a vortex-carrying self-focusing light beam with a plurality of solid focuses, namely a cyclone dovetail vortex light beam. By controlling the suddenly-changed light beam superposition number to be equal to the negative topological charge number, the light beams form a plurality of solid focuses in the transmission process, and vortex propagation is achieved. In an experiment, a hologram with specific parameters is generated through a computer and is loaded to a spatial light modulator, so that a plurality of solid self-focusing focuses of a cyclonic dovetail vortex beam are generated. The control mode is simple and convenient to operate, and the gen
Bibliography:Application Number: CN202410481478