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A Method for Realizing Light Pipe Field Array with Predetermined Characteristics

A light pipe field and array technology, applied in the field of tight focus, can solve the problem of few researches on multi-segment hollow light pipes, and achieve the effect of simple method

Active Publication Date: 2021-08-31
QUANZHOU NORMAL UNIV
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  • Summary
  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, little research has been done on how to generate multi-segment hollow light pipes or arrays of hollow light pipes

Method used

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  • A Method for Realizing Light Pipe Field Array with Predetermined Characteristics
  • A Method for Realizing Light Pipe Field Array with Predetermined Characteristics
  • A Method for Realizing Light Pipe Field Array with Predetermined Characteristics

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Embodiment Construction

[0033] The technical solution of the present invention will be specifically described below in conjunction with the accompanying drawings.

[0034] The invention provides a method for realizing a light pipe field array with predetermined characteristics. By reversely inverting the radiation field of a collinear antenna array composed of uniform magnetic current line source array elements, a hollow light pipe array is generated in the focal area. The specific implementation of this method is as follows:

[0035] First, it is assumed that a virtual antenna array is placed at the focal center of a 4π high numerical aperture (NA) lens along the optical axis;

[0036] Then, the field radiated from the virtual antenna array is completely collected by two high numerical aperture (NA) lenses and transmitted from image space to the pupil plane of the lenses; here, the field distribution on the pupil plane can be obtained by solving the inverse problem If the lens obeys the Helmholt...

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Abstract

The invention relates to a method for realizing a light pipe field array with predetermined characteristics. The method realizes the hollow light pipe array by reversely inverting the radiation field of the isotropic collinear magnetic current antenna array located in the focal region. Simulation examples show that the realized hollow light pipe is purely azimuthally polarized and the light intensity distribution is almost constant in the whole focal depth range; the shape and position of the hollow light pipe only depend on the element factor and the array factor respectively. The light pipe array with predetermined properties realized by the method of the invention is expected to be used in the fields of multi-particle trapping and manipulation, multi-particle processing, photolithography and the like.

Description

technical field [0001] The present invention relates to the tight focusing technology of cylindrical vector light beams, in particular to a method for realizing a hollow light pipe array in a 4π focal region by using the radiation pattern of a collinear magnetic current antenna array through time inversion, especially a method for realizing a hollow light pipe array with a predetermined Properties of light pipe field array methods. Background technique [0002] The hollow light pipe formed by the cylindrical vector beam under the focus of a high numerical aperture (NA, Numerical Aperture) lens, because of its zero intensity distribution along the central axis, has great potential in the fields of particle trapping, micromanipulation, lithography, and optical microscopy. important application, so it has been extensively studied. [0003] Researchers have theoretically and experimentally proposed many methods for generating and manipulating hollow light pipes. For example, J...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/35H01Q19/06H01Q21/00H01Q21/08
CPCG02F1/3511H01Q19/062H01Q21/0087H01Q21/08
Inventor 余燕忠贾蕾
Owner QUANZHOU NORMAL UNIV
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