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Design method for transmitting invariant rotation light beams

A technology of rotating beams and design methods, which is applied in the field of optics and can solve problems such as general design methods for rotating beams that have not yet been found

Active Publication Date: 2019-01-18
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the past, no general design method has been found that can be applied universally to the generation of rotating beams

Method used

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  • Design method for transmitting invariant rotation light beams
  • Design method for transmitting invariant rotation light beams
  • Design method for transmitting invariant rotation light beams

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Experimental program
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Embodiment 1

[0017] The two-dimensional, independently and continuously adjustable all-optical optical path control method of the present invention includes the following steps:

[0018] S1, according to the requirements of the rotation direction, select the symbols of the topological charge l of the Laguerre-Gaussian beam. When l0, it rotates in a counterclockwise direction.

[0019] S2, under the condition that the sign of the topological charge l mentioned in S1 is satisfied, according to the rotation speed (that is, the rotation azimuth angle According to the requirements of the changing law of transmission distance, according to the formula

[0020]

[0021] Determine the corresponding proportional constant

[0022]

[0023] The value of β is a real number that can be adjusted as required, and the modulus p, l of each constituent Laguerre Gaussian beam is selected according to the value of Δ. In the above two formulas, w 0 Is waist width, z 0 Is w 0 Corresponding Rayleigh distance, w c Is th...

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Abstract

The present invention relates to the technical field of optics, in particular to a design method for transmitting invariant rotation light beams. Based on a transmission characteristic of composite light beams formed by concentric coherent superposition of multi-mode Laguerre Gaussian beams, the method provides a universally applicable design method for transmitting invariant rotation light beams.The method can design rotation speed, rotation direction and number of light spot valves, and the method adopts a specific mode order, an energy proportional relationship, and an initial phase relationship of each component of the Laguerre Gaussian beams as an adjustment degree of freedom, adjusts detail distribution of the light spot to obtain a phase-distribution of the transmitted invariant rotating beams for specific application requirements.

Description

Technical field [0001] The invention relates to the field of optical technology, and in particular to a design method for transmitting an indeformable rotating beam. Background technique [0002] The non-deformable rotating beam is a rotating beam that only changes its size without changing the shape of the spot during transmission. This type of beam has important applications in particle manipulation and other fields. In the past, no general design method that can be universally applied to rotating beam generation has not been found. Based on the transmission characteristics of the composite beam formed by the concentric coherent superposition of multi-mode Laguerre-Gaussian beams, the present invention proposes a universally applicable design method for transmission of non-deformable rotating beams. Summary of the invention [0003] The purpose of the present invention is to solve the defects in the prior art and provide a transmission non-deformable rotating beam that can desi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/00
CPCG02B27/0012
Inventor 陆大全陈娟胡巍
Owner SOUTH CHINA NORMAL UNIVERSITY