High Power Laser Science and Engineering, Volume. 12, Issue 6, 06000e92(2024)

Temporal waveform denoising using deep learning for injection laser systems of inertial confinement fusion high-power laser facilities Editors' Pick

Wei Chen1,2, Xinghua Lu1、*, Wei Fan1,2, and Xiaochao Wang1,2
Author Affiliations
  • 1Key Laboratory of High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, China
  • 2Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, China
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    Figures & Tables(16)
    The temporal pulse shaping schematic in the SG-II-up high-power laser facility.
    The electrical waveform and temporal waveform in the pulse shaping unit: (a) the electrical waveform set by the AWG; (b) the temporal waveform collected at the front-end system.
    Convolutional neural network model structure.
    Typical simulated waveform data.
    The progression of the loss function for both the training and validation sets.
    The simulated waveforms and corresponding denoising results obtained by the model: (a)–(c), (g)–(i) input waveforms; (d)–(f), (j)–(l) denoised waveforms and ideal waveforms.
    The simulated waveforms and corresponding denoising results obtained by the model: (a) input waveform; (b) output waveform of one model run and the ideal waveform; (c) output waveform of three model runs and the ideal waveform.
    Model performance with different numbers of calculations: (a) RMSE and SNR; (b) errors in the contrast of the waveforms; (c) time of the calculations.
    Comparison of complex input waveforms and denoised waveforms obtained by the model: (a)–(c) input waveforms; (d)–(f) denoised waveforms and ideal waveforms.
    The temporal waveforms of the experiment and corresponding denoising results obtained by the model: (a)–(c) input waveforms; (d)–(f) denoised waveforms.
    Different types of temporal waveforms of the experiment and corresponding denoising results obtained by the model: (a)–(c) input waveforms; (d)–(f) denoised waveforms.
    Electric waveforms with the same contrast set by the AWG.
    The temporal waveforms of the experiment and corresponding denoised results obtained by the model: (a) input waveforms; (b) denoised waveforms; (c) contrast of five denoised temporal waveforms.
    • Table 1. Evaluation of model performance indicators.

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      Table 1. Evaluation of model performance indicators.

      Temporal waveformRMSEContrastRising edge time/psSNR/dB
      DenoisedIdealDenoisedIdealInputDenoised
      waveformwaveformwaveformwaveformWaveformwaveform
      Figure 6(a)0.26%5:15:1191960.8397.75
      Figure 6(b)0.25%38:139:1876175.21105.19
      Figure 6(c)0.05%117:1116:1331968.47124.12
      Figure 6(h)0.26%154:1156:1382449.29102.00
      Figure 6(i)0.14%197:1195:1493550.26107.73
      Figure 6(j)0.16%329:1332:1493048.18103.86
    • Table 2. Comparison of model performance with different numbers of calculations.

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      Table 2. Comparison of model performance with different numbers of calculations.

      Number of calculationsRMSEContrastRising edge time/psSNR/dBCalculation time/s
      DenoisedIdealDenoisedIdealDenoisedInput
      waveformwaveformwaveformwaveformwaveformWaveform
      10.50%17.2:118.5:1471982.9337.181.96
      30.27%18.4:12295.073.78
    • Table 3. Evaluation of model performance indicators (complex waveforms).

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      Table 3. Evaluation of model performance indicators (complex waveforms).

      Temporal waveformRMSEContrastSNR/dB
      DenoisedIdealInputDenoised
      waveformwaveformwaveformwaveform
      Figure 9(a)0.20%2.76:12.78:157.28112.89
      Figure 9(b)0.37%24:125:151.7292.86
      Figure 9(c)0.41%24.7:125:147.6094.20
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    Wei Chen, Xinghua Lu, Wei Fan, Xiaochao Wang. Temporal waveform denoising using deep learning for injection laser systems of inertial confinement fusion high-power laser facilities[J]. High Power Laser Science and Engineering, 2024, 12(6): 06000e92

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    Paper Information

    Category: Research Articles

    Received: Jul. 26, 2024

    Accepted: Aug. 27, 2024

    Published Online: Jan. 6, 2025

    The Author Email: Xinghua Lu (fanweil@siom.ac.cn)

    DOI:10.1017/hpl.2024.60

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