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Chinese Journal of Lasers, Volume. 52, Issue 2, 0201008(2025)

Laser Intensity Stabilization Based on High‐Bandwidth Direct Digital Synthesis Technology

Yuhong Lin1, Wenchao Ji2,4, Mingyi Zhu1, Bowei Wang2,4, Yang Zhang1, Peijun Feng3,4, Xiangpei Liu2,3, Hanning Dai1,2,3,4, and Xiao Jiang1,2,3,4、*
Author Affiliations
  • 1School of Physical Sciences, University of Science and Technology of China, Hefei 230026, Anhui , China
  • 2Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, Anhui , China
  • 3CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, Anhui , China
  • 4Hefei National Laboratory, University of Science and Technology of China, Hefei 230088, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (8)
    Equations (0)
    References (21)
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    Figures & Tables(8)
    Laser power stabilization control verification setup

    Fig. 1. Laser power stabilization control verification setup

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    Model block diagram of laser power stabilization system

    Fig. 2. Model block diagram of laser power stabilization system

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    Amplitude noise and phase noise of different devices. (a) Amplitude noise at different devices and carrier power levels; (b) effect of VVA on phase noise

    Fig. 3. Amplitude noise and phase noise of different devices. (a) Amplitude noise at different devices and carrier power levels; (b) effect of VVA on phase noise

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    Amplitude control response time of different devices. (a) Response time of SMA100B; (b) response time of digital PI control circuit and AD9914

    Fig. 4. Amplitude control response time of different devices. (a) Response time of SMA100B; (b) response time of digital PI control circuit and AD9914

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    Spectrum measurements. (a) Measurement of laser power noise closed-loop transfer function; (b) relative intensity noise power spectral density of laser

    Fig. 5. Spectrum measurements. (a) Measurement of laser power noise closed-loop transfer function; (b) relative intensity noise power spectral density of laser

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    Fluctuation of PD voltage over 160 min

    Fig. 6. Fluctuation of PD voltage over 160 min

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    Laser power stabilization process. (a) Traditional PI locking process; (b) quick PI locking process

    Fig. 7. Laser power stabilization process. (a) Traditional PI locking process; (b) quick PI locking process

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    • Table 1. Overview in laser power stabilization technology based on AOM

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      Table 1. Overview in laser power stabilization technology based on AOM

      Ref.Technical solutionResults of in-loop
      PID type

      RF

      source

      		AmplitudeLock-on time /µsRelative stability in percent /%Relative stability in spectrum density

      Suppression

      ratio

      ［15］AnalogMixer6

      0.00247

      （14 h）

      ［16］DigitalVCODAC1800

      0.035

      （3 h）

      -110 dBc/Hz

      （1 Hz， 5.75 mW）

      22 dB

      （1 Hz）

      ［17］AnalogVVA

      0.00296

      （6 h）

      -130 dBc/Hz

      （1 Hz， 3 mW）

      40 dB

      （100 Hz）

      ［21］Analog

      0.16

      （15 min）

      -94.1 dBm

      （1 Hz， 537 mW）

      27.4 dB

      （1 Hz）

      OursDigitalDDSDDS3

      0.0076

      （160 min）

      -111.2 dBc/Hz

      （1 Hz， 1.72 mW）

      51.1 dB

      （1 Hz）

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    Yuhong Lin, Wenchao Ji, Mingyi Zhu, Bowei Wang, Yang Zhang, Peijun Feng, Xiangpei Liu, Hanning Dai, Xiao Jiang. Laser Intensity Stabilization Based on High‐Bandwidth Direct Digital Synthesis Technology[J]. Chinese Journal of Lasers, 2025, 52(2): 0201008

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    Paper Information

    Category: laser devices and laser physics

    Received: Jun. 17, 2024

    Accepted: Jul. 22, 2024

    Published Online: Jan. 17, 2025

    The Author Email: Jiang Xiao (jiangx@ustc.edu.cn)

    DOI:10.3788/CJL240972

    CSTR:32183.14.CJL240972

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology