一种基于深度学习引导的自适应搜索的智能谐波锁模方法及系统

By combining deep learning and adaptive optimization algorithms, fully automatic high-harmonic mode-locking control of fiber lasers was achieved, solving the problems of insufficient automation and poor stability in existing technologies, and improving the automation level and response speed of lasers.

CN122159036BActive Publication Date: 2026-07-17SOUTHEAST UNIV

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SOUTHEAST UNIV
Filing Date
2026-05-11
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing passively mode-locked fiber lasers rely on manual experience for polarization control parameters and pump power adjustment, resulting in insufficient automation. It is difficult to quickly establish and maintain high-order harmonic mode-locking states. Traditional methods are inefficient and cannot meet the requirements of rapid mode-locking and long-term stability.

Method used

An adaptive search method based on deep learning is adopted. By monitoring spectral, temporal, and radio frequency signals and combining residual neural networks to identify the laser state, the optimal polarization control parameters and pump power are searched through an adaptive optimization algorithm to achieve fully automatic and rapid control of high-order harmonic mode-locking.

Benefits of technology

This method enables fully automatic and rapid control of fiber lasers from fundamental frequency mode-locking to target high repetition frequency harmonic mode-locking, significantly improving the automation level and stability of the laser and solving the problems of low efficiency and insufficient stability of traditional methods.

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Abstract

本发明公开了一种基于深度学习引导的自适应搜索的智能谐波锁模方法及系统,属于超快光纤激光器及自动控制技术领域。该方法包括:采集激光器输出的光谱信号、时域信号和射频信号,对激光器当前工作状态进行识别,以区分连续光状态、调Q锁模状态和基频锁模状态;当为连续光状态或调Q锁模状态时,对偏振控制参数和泵浦功率进行搜索与调节,并将调节后的参数作用于激光器;当为基频锁模状态时,基于时域信号和射频信号进行联合判别,若未达到目标谐波锁模状态,则对偏振控制参数和泵浦功率进行搜索与调节,若达到目标谐波锁模状态,则输出锁模结果及对应参数。本发明实现了光纤激光器的全自动化控制,提高了算法的泛用性,且结构简单易实现。
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