Method for constructing controllable optical pin array based on collinear antenna array radiation theory

A collinear antenna array, radiation theory technology, applied in nonlinear optics, optics, instruments, etc., can solve the problems of lack of flexibility, lengthy optimization process, etc., and achieve a controllable number of optical needles, simple construction, and variable length. Effect

Active Publication Date: 2019-02-15
QUANZHOU NORMAL UNIV
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Problems solved by technology

[0003] The above methods and other methods in the prior art all need to optimize the relevant parameters of the focusing system

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  • Method for constructing controllable optical pin array based on collinear antenna array radiation theory
  • Method for constructing controllable optical pin array based on collinear antenna array radiation theory
  • Method for constructing controllable optical pin array based on collinear antenna array radiation theory

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Embodiment Construction

[0033] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0034] It should be pointed out that the following detailed description is exemplary and is intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0035] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combina...

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Abstract

The invention relates to a method for constructing a controllable optical pin array based on collinear antenna array radiation theory. The method is implemented by reverse focusing the radiation fieldof a virtual collinear antenna array located in the focal region of a 4 focusing system. Each unit of the antenna array is arranged along the optical axis direction, and the current of each unit is uniformly distributed along the optical axis direction. The length and the center position of the nth segment of the optical pin respectively depend only on the length and the coordinate position of the nth array element in the collinear array. The number of optical pins in the optical pin array is equal to the number of array elements in the antenna array. Each segment of the optical pin is strongly and longitudinally polarized and the lateral FWHM remains unchanged throughout the focal depth range. The optical pin array produced by the method is expected to be used for multi-particle acceleration, trapping, manipulation, and the like.

Description

technical field [0001] The invention relates to the field of generation of optical needle arrays, in particular to a method for constructing a controllable optical needle array based on the collinear antenna array radiation theory. Background technique [0002] In recent years, there has been increasing interest in cylindrically symmetric vector (CV) beams due to their novel properties and broad applications. The tight focusing of CV beams by high numerical aperture lenses and the generation of light needles in the focal region have become one of the important research topics, because light needles have a wide range of applications in particle acceleration, optical trapping and manipulation. Wang et al. first reported the method of tightly focusing a radial CV beam using a binary optical element to generate a light needle. Subsequently, methods to generate various single-segment optical needles with specific properties have been proposed. Recently, Yu et al. proposed a met...

Claims

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Application Information

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IPC IPC(8): G02F1/29
CPCG02F1/292G02F1/294
Inventor 余燕忠曾雨婷
Owner QUANZHOU NORMAL UNIV
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