• Infrared and Laser Engineering
  • Vol. 54, Issue 5, 20240463 (2025)
Mingda CHU1,2, Bo TANG1, Jianbo WANG2, Cong YIN2..., Wenwen BI2, Mingyu ZHANG2, Zhirang YANG1,2, Yixuan ZHU2, Jing ZHANG1,2 and Ming KONG1|Show fewer author(s)
Author Affiliations
  • 1College of Metrology & Measurement Instrumentation, China Jiliang University, Hangzhou 310018, China
  • 2National Institute of Metrology, Beijing 100029, China
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    DOI: 10.3788/IRLA20240463 Cite this Article
    Mingda CHU, Bo TANG, Jianbo WANG, Cong YIN, Wenwen BI, Mingyu ZHANG, Zhirang YANG, Yixuan ZHU, Jing ZHANG, Ming KONG. Research on digital control method for 633 nm iodine stabilized wavelength standard[J]. Infrared and Laser Engineering, 2025, 54(5): 20240463 Copy Citation Text show less
    Control structure diagram of an iodine-stabilized laser
    Fig. 1. Control structure diagram of an iodine-stabilized laser
    DDS schematic diagram
    Fig. 2. DDS schematic diagram
    Spectrum diagram with higher-order harmonics
    Fig. 3. Spectrum diagram with higher-order harmonics
    Spectrum diagram of the modulated signal generated by DDS
    Fig. 4. Spectrum diagram of the modulated signal generated by DDS
    Block diagram of the signal demodulation algorithm
    Fig. 5. Block diagram of the signal demodulation algorithm
    (a) Demodulation curve of the iodine cell with non-saturated absorption; (b) Demodulation curve of the iodine cell with saturated absorption
    Fig. 6. (a) Demodulation curve of the iodine cell with non-saturated absorption; (b) Demodulation curve of the iodine cell with saturated absorption
    Schematic diagram of second harmonic detection of the absorption peak
    Fig. 7. Schematic diagram of second harmonic detection of the absorption peak
    Absorption peak identification algorithm flowchart
    Fig. 8. Absorption peak identification algorithm flowchart
    Second harmonic absorption peak curve
    Fig. 9. Second harmonic absorption peak curve
    f-peak identification and locking curve
    Fig. 10. f-peak identification and locking curve
    (a) Output of the PID control signal with poor parameter tuning; (b) Corresponding beat frequency
    Fig. 11. (a) Output of the PID control signal with poor parameter tuning; (b) Corresponding beat frequency
    (a) Output of the PID control signal with good parameter tuning; (b) Corresponding beat frequency
    Fig. 12. (a) Output of the PID control signal with good parameter tuning; (b) Corresponding beat frequency
    Schematic diagram of absolute frequency measurement based on an optical frequency comb
    Fig. 13. Schematic diagram of absolute frequency measurement based on an optical frequency comb
    (a) Beat frequency of a non-saturated laser based on an optical frequency comb; (b) Allan variance of the non-saturated laser
    Fig. 14. (a) Beat frequency of a non-saturated laser based on an optical frequency comb; (b) Allan variance of the non-saturated laser
    (a) Beat frequency of a saturated laser based on an optical frequency comb; (b) Allan variance of the saturated laser
    Fig. 15. (a) Beat frequency of a saturated laser based on an optical frequency comb; (b) Allan variance of the saturated laser
    Frequency reproducibility of the iodine-stabilized laser
    Fig. 16. Frequency reproducibility of the iodine-stabilized laser
    Mingda CHU, Bo TANG, Jianbo WANG, Cong YIN, Wenwen BI, Mingyu ZHANG, Zhirang YANG, Yixuan ZHU, Jing ZHANG, Ming KONG. Research on digital control method for 633 nm iodine stabilized wavelength standard[J]. Infrared and Laser Engineering, 2025, 54(5): 20240463
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