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Method for realizing electromagnetic focusing by using multi-stage zero orbital angular momentum system

A technology of orbital angular momentum and system realization, which is applied in the field of electromagnetic focusing by using a multi-stage zero orbital angular momentum system, which can solve the problems of limiting the imaging resolution of the system, increasing the difficulty of processing, single imaging means and transposition, etc., and achieve focus resolution The effect of improving the efficiency and avoiding the requirement of precise phase control

Pending Publication Date: 2022-02-15
CHONGQING UNIV
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Problems solved by technology

However, this method requires accurate design of the optical device to achieve precise phase control, which increases the difficulty of processing and limits the imaging resolution of the system
Due to the single consideration of the phase factor, most optical imaging devices are phase-controlled devices, resulting in a single imaging method and transposition

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  • Method for realizing electromagnetic focusing by using multi-stage zero orbital angular momentum system
  • Method for realizing electromagnetic focusing by using multi-stage zero orbital angular momentum system

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0028] In paragraph 4 of the claims, the implementation method of the multi-stage zero orbital angular momentum focusing system is based on a two-stage zero orbital angular momentum focusing system. At the same time, in the traditional single-stage orbital angular momentum excitation research, the circular aperture is often used as a typical form , so in this embodiment, a two-stage orbital angular momentum focusing system in the form of an annular aperture is taken as an example for introduction. The rest of the caliber forms are based on the traditional single-stage orbital angular momentum excitation method to realize the excitation of each stage of the system, and more stages of the system can be obtained through the promotion of the two-stage system embodiment.

[0029] A specific example of the present invention figure 1 As shown, it is ...

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Abstract

The invention discloses a method for realizing electromagnetic focusing by using a multi-stage zero orbital angular momentum system. According to the method, a multistage orbital angular momentum system is provided, and the total orbital angular momentum of the multistage orbital angular momentum system is designed to be zero, so that electromagnetic focusing is realized. Compared with a focusing method for enabling radiation to meet a phase required by focusing by calculating an optical path difference in traditional focusing research, the method is not based on an aplanatism principle any more, so that the dependency on phase control is reduced. Focusing depends on the total orbital angular momentum of the system, so that implementation means of the focusing system are richer, the problem that in classical focusing, the means which can only be achieved through phase regulation and control is single is solved, and a new direction is provided for improvement of focusing performance.

Description

technical field [0001] The present invention relates to the fields of optical device (G02F), photoplate-making process of patterned surface (G03F), and antenna (H05B6 / 72), in particular a method for realizing electromagnetic focusing by using a multi-stage zero orbital angular momentum system. Background technique [0002] Electromagnetic focusing is a key research content in the fields of optics and electromagnetics. It is the basis of imaging technology and plays an important role in the research of energy transmission, information technology, and antennas. In chip manufacturing, optical etching is the mainstream process of semiconductor device processing, and it also uses optical focusing as the main technical means. In the traditional optical focusing research, based on the principle of equal optical path, through the design of the phase distribution of the corresponding outgoing wave, the phases from the exit aperture to the focal position are the same to achieve optica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/00
CPCG02B27/00
Inventor 孙志伟曹海林刘润龚鹤凌
Owner CHONGQING UNIV
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