A method and system for optimizing a dual-focus optical system based on fundamental mode Gaussian beam

By deriving and dividing the light intensity distribution formula, creating a light intensity correction model and performing light intensity compensation processing, the problem of uneven light intensity distribution of the fundamental mode Gaussian beam in the bifocal optical system is solved, and the stability and light intensity compensation efficiency of the optical system are improved.

CN119738959AActive Publication Date: 2025-04-01SILKWORM COCOON RES GROUP CHINESE INST OF TEST TECH
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Patent Information

Application Number
CN202510254153.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-03-05
Publication Date
2025-04-01
Estimated Expiration
2045-03-05

AI Technical Summary

Technical Problem

In a bifocal optical system, the fundamental mode Gaussian beam forms a wave-shaped light intensity distribution on the axis behind the Fresnel wave band and the thin lens, affecting the stability of the optical system.

Method used

By deducing the light intensity distribution formula on the axis after the fundamental mode Gaussian beam passes through the bifocal optical system, the light intensity distribution map is divided into several intervals, the median value of each interval is calculated, the light intensity correction model is created, the light intensity value is measured in real time and trained, the correction value of each interval is output, and the light intensity compensation processing is performed.

Benefits of technology

The stability of the optical system is improved, and by avoiding light intensity compensation for all points, the calculation amount and light intensity compensation points are reduced, and the efficiency and accuracy of light intensity compensation are improved.

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Abstract

The invention relates to a method and system for optimizing a bifocal optical system based on a fundamental mode Gaussian beam, and the method comprises the following steps: deriving a light intensity distribution formula on an axis of a fundamental mode Gaussian beam after the beam passes through the bifocal optical system; obtaining a light intensity distribution diagram on an axis of the beam after the beam passes through the bifocal optical system; dividing the light intensity distribution diagram on the axis into a plurality of intervals, taking a median for each interval on the axis of the light intensity distribution diagram on the axis, and taking the median of each interval as the light intensity value of the corresponding interval; creating a light intensity correction model, measuring the light intensity values ​​of a plurality of designated points in real time, and calculating the corresponding theoretical light intensity values ​​of the plurality of designated points, inputting the light intensity values ​​of the plurality of designated points measured in real time and the corresponding theoretical light intensity values ​​into the light intensity correction model for training, and then inputting the median of each interval into the light intensity correction model, and outputting a corrected value of the median of each interval; and performing light intensity compensation processing on each interval based on the difference between the corrected median and a preset standard value, thereby improving the stability of the optical system.
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