基于小波的饱和吸收线检测激光频率锁定

IF 2.7 3区工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY

Measurement Science and Technology Pub Date : 2024-01-09 DOI:10.1088/1361-6501/ad1cc2

Guanghui Li, Xinxiu Zhou, Lihong Duan, Zhaoyu Wang, Wei Quan

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引用次数: 0

摘要

由于噪声和多普勒背景的存在，精确的饱和吸收（SA）峰自动识别技术对激光频率调谐和锁定提出了巨大挑战。为解决这一问题，我们提出了一种新型的饱和吸收光谱峰值识别算法。首先，提出了一种基于小波变换（GCWT）的高斯滤波器来减轻光谱高频噪声。随后，设计了一种结合一阶高斯小波变换（FGCWT）和自适应阈值判断的混合方法，用于多峰边界分割。最后，我们基于自适应非线性拟合算法获得了目标峰值及其扫描电压，该算法几乎不受多普勒背景造成的峰值不对称的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Wavelet-Based Saturated Absorption Line Detection for Laser Frequency Locking

Owing to the presence of noise and the Doppler background, accurate saturated absorption (SA) peak automatic identification technology poses a significant challenge for laser frequency tuning and locking. To address this issue, a novel peak identification algorithm for the SA spectrum is proposed. First, a Gaussian filter based on a wavelet transform (GCWT) is proposed to mitigate the spectral high-frequency noise. Subsequently, a hybrid method combining a first-order Gaussian wavelet transformation (FGCWT) and adaptive threshold judgment was designed for multi-peak boundary segmentation. Finally, we obtained the target peak and its sweeping voltage based on an adaptive nonlinear fitting algorithm, which was almost unaffected by the peak asymmetry caused by the Doppler background.

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来源期刊

Measurement Science and Technology 工程技术-工程：综合

CiteScore

4.30

自引率

16.70%

发文量

656

审稿时长

4.9 months

期刊介绍： Measurement Science and Technology publishes articles on new measurement techniques and associated instrumentation. Papers that describe experiments must represent an advance in measurement science or measurement technique rather than the application of established experimental technique. Bearing in mind the multidisciplinary nature of the journal, authors must provide an introduction to their work that makes clear the novelty, significance, broader relevance of their work in a measurement context and relevance to the readership of Measurement Science and Technology. All submitted articles should contain consideration of the uncertainty, precision and/or accuracy of the measurements presented. Subject coverage includes the theory, practice and application of measurement in physics, chemistry, engineering and the environmental and life sciences from inception to commercial exploitation. Publications in the journal should emphasize the novelty of reported methods, characterize them and demonstrate their performance using examples or applications.