Laser Frequency Stabilization Method Based on Intelligent Identifying Absorption Peaks with Convolutional Neural Network

Benyong Chen; Yong Zhao; Yingtian Lou; Liping Yan; Jiandong Xie; Liang Yu; Jianjun Tang

doi:10.3788/CJL231308

Chinese Journal of Lasers, Volume. 51, Issue 17, 1701005(2024)

Laser Frequency Stabilization Method Based on Intelligent Identifying Absorption Peaks with Convolutional Neural Network

Benyong Chen, Yong Zhao, Yingtian Lou, Liping Yan^*, Jiandong Xie, Liang Yu, and Jianjun Tang

Author Affiliations

Precision Measurement Laboratory, School of Information Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, Zhejiang , China

show less

Abstract Get PDF(in Chinese)

Figures & Tables(16)

Fig. 1. SAS laser frequency stabilization method based on CNN intelligent recognition of absorption peaks and phase automatic matching

Download full size

Fig. 2. Saturation absorption spectroscopy signal after preprocessing

Download full size

Fig. 3. Absorption peaks marking. (a) ⁸⁷Rb F=1→F′ transition; (b) ⁸⁵Rb F=2→F′ transition; (c) ⁸⁵Rb F=3→F′ transition; (d) ⁸⁷Rb F=2→F′ transition

Download full size

Fig. 4. One-dimensional convolutional neural network model

Download full size

Fig. 5. Convergence trend chart of loss function

Download full size

Fig. 6. Predicted sequence number of absorption peaks

Download full size

Fig. 7. Error of the predicted results

Download full size

Fig. 8. Error signal under different phase delay values Δφ. (a) 0°‒150°; (b) 180°‒330°

Download full size

Fig. 9. Schematic diagram of error signal demodulation based on phase delay automatic extraction and matching

Download full size

Fig. 10. Phase delay and error signal before and after phase delay matching. (a) Phase delay; (b) error signal

Download full size

Fig. 11. Amplitude changes of three signals before and after laser frequency locking. (a) Scanning control signal of PZT; (b) saturation absorption spectral signal; (c) error signal

Download full size

Fig. 12. Frequency spectrum of beat signal

Download full size

Fig. 13. Frequency fluctuation of beat signal

Download full size

Fig. 14. ECDL laser frequency stability after locking

Download full size

Table 1. Spectral frequencies corresponding to four groups of absorption peak signals^[25]

View table

Table 1. Spectral frequencies corresponding to four groups of absorption peak signals^[25]

Peak group	Transition	Frequency v /MHz	Δv /MHz	Peak group	Transition	Frequency v /MHz	Δv /MHz
1：⁸⁷Rb F=1→F′ transition	0	384234454.1		4：⁸⁷Rb F=2→F′ transition	1	384227691.6
	CO0-1	384234490.2	36.1		CO1-2	384227770.1	78.5
	1	384234526.3	36.1		2	384227848.6	78.5
	CO0-2	384234568.7	42.4		CO1-3	384227903.4	54.8
	CO1-2	384234604.8	36.1		CO2-3	384227981.9	78.5
	2	384234683.2	78.4		3	384228115.2	133.3
2：⁸⁵Rb F=2→F′ transition	1	384232064		3：⁸⁵Rb F=3→F′ transition	2	384229057.6
	CO1-2	384232078.7	14.7		CO2-3	384229089.3	31.7
	2	384232093.4	14.7		3	384229121	31.7
	CO1-3	384232110.4	17		CO2-4	384229149.7	28.7
	CO2-3	384232125.1	14.7		CO3-4	384229181.4	31.7
	3	384232156.8	31.7		4	384229241.7	60.3

Table 2. One-dimensional CNN parameters

View table

Table 2. One-dimensional CNN parameters

Layer	Kernel size /stride	Quantity of filters	Output shape
Input		1	5550×1×1
Conv 1	3/1	2	5550×1×2
Maxpool 1	2/2	2	2775×1×2
Conv 2	3/1	2	2775×1×2
Maxpool 2	2/2	2	1388×1×2
Conv 3	3/1	4	1388×1×4
Maxpool 3	2/2	4	694×1×4
Conv 4	3/1	4	694×1×4
Maxpool 4	2/2	4	347×1×4
Conv 5	64/1	8	347×1×8
Maxpool 5	2/2	8	174×1×8
Dense 1		1	180×1×1
Dense 2		1	24×1×1

Tools

Get Citation

Copy Citation Text

Benyong Chen, Yong Zhao, Yingtian Lou, Liping Yan, Jiandong Xie, Liang Yu, Jianjun Tang. Laser Frequency Stabilization Method Based on Intelligent Identifying Absorption Peaks with Convolutional Neural Network[J]. Chinese Journal of Lasers, 2024, 51(17): 1701005

Download Citation

EndNote(RIS)BibTex Plain Text

Set citation alerts for article

Save article for my favorites

Paper Information

Category: laser devices and laser physics

Received: Oct. 19, 2023

Accepted: Dec. 7, 2023

Published Online: Aug. 31, 2024

The Author Email: Yan Liping (yanliping@zstu.edu.cn)

DOI:10.3788/CJL231308

CSTR:32183.14.CJL231308

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Spectral frequencies corresponding to four groups of absorption peak signals[25]

Table 1. Spectral frequencies corresponding to four groups of absorption peak signals[25]

Table 2. One-dimensional CNN parameters

Table 2. One-dimensional CNN parameters

Table 1. Spectral frequencies corresponding to four groups of absorption peak signals^[25]

Table 1. Spectral frequencies corresponding to four groups of absorption peak signals^[25]