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Research on High-Precision Astronomical Spectral Calibration Light Source System and Remote-Control Technology
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1.Nankai University;2.Peking University

Fund Project:

The National Natural Science Foundation of China (General Program, Key Program, Major Research Plan)

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    Abstract:

    Fiber femtosecond optical frequency combs (OFCs) play a crucial role in achieving high-precision astronomical spectral calibration in the field of astronomy[1,2]. However, OFCs generated by lasers are susceptible to disturbances from environmental factors and internal vibrations, leading to frequency drift and decreased stability[3,4]. To address these, We develop a closed-loop servo control system utilizing error signals between the OFC and microwave frequency reference to stabilize the frequency. Then we design a remote-control component of the system, enabling real-time monitoring and precise control of the OFC. The results demonstrate that the system we designed not only achieves precise synchronization of the OFC’s carrier-envelope offset frequency with the microwave frequency reference, but also maintains long-term stability of the OFC, facilitating further advancements in high-precision astronomical spectral calibration light sources.

    Reference
    [1] Steinmetz T, Wilken T, Araujo-Hauck C, et al. Laser frequency combs for astronomical observations[J]. Science, 2008, 321(5894):1335-1337.
    [2] Mohandas R A , Ponnampalam L , Li L H , et al.Exact frequency and phase control of a terahertz laser[J]. Optica, 2020, 7(9):1143-1149.
    [3] Pi Y , Tian H , Li R , et al. Timing Jitter and Intensity Noise Characterization of a 122-MHz All-PM NALM Mode-Locked Fiber Laser[J]. IEEE Photonics Technology Letters, 2021, 33(24):1439-1442.
    [4] Pu G , Liu R , Luo C , et al. Intelligent Single-Cavity Dual-Comb Source With Fast Locking[J]. Journal of Lightwave Technology: A Joint IEEE/OSA Publication, 2023, 41(2):593-598.
    [5] Metcalf A J , Anderson T , Bender C F ,et al. Stellar Spectroscopy in the Near-infrared with a Laser Frequency Comb[J]. Optica, 2019, 6(2):233-239.
    [6] Herr T , Mccracken R A . Astrocombs: Recent Advances[J]. IEEE Photonics Technology Letters, 2019, 31(23):1890-1893.
    [7] Chen X , Zhang J , Lu J ,et al. Feed-forward digital phase compensation for long-distance precise frequency dissemination via fiber network[J]. Optics Letters, 2015, 40(3):371-374.
    [8] Minardi S , Harris R J , Labadie L . Astrophotonics: astronomy and modern optics[J]. The Astronomy and Astrophysics Review, 2021, 29(1):6.
    [9] Xu C, Zuo J W, Bian Q, et al. Frequency Stabilization of a Microsecond Pulse Sodium Guide Star Laser with a Tilt-and Temperature-Tuned Etalon[J]. Chinese Physics Letters, 2017, 34(7):074203.
    [10] Diddams S A, Hollberg L, Mbele V. Molecular fingerprinting with the resolved modes of a femtosecond laser frequency comb[J]. Nature, 2007, 445(7128):627-630.
    [11] HALL J L. Nobel Lecture: Defining and measuring optical frequencies[J]. Reviews of Modern Physics, 2006, 78(4): 1279-1295.
    [12] FORTIER T M, ROOS P A, JONES D J, et al. Carrier-Envelope Phase-Controlled Quantum Interference of Injected Photocurrents in Semiconductors[J]. Physical Review Letters, 2004, 92(14):147403.
    [13] Ma Y, Zuo L, Meng F, et al. A compact 30 GHz spaced astro-comb based on 1 GHz Yb: fiber laser[C]//2016 Conference on Lasers and Electro-Optics (CLEO). IEEE, 2016: 1-2.
    [14] ZHANG W, ZHOU W, CHEN X, et al. Development of a photoelectric phase-locked loop model to better synchronize frequency combs and microwaves[J]. Applied Optics, 2020, 59(19):5723-5728.
    [15] Zhao M, Jin X, et al. Attosecond timing jitter from high repetition rate femtosecond “solid-state fiber lasers”[J]. Optica, 2022, 9(8):874-877.
    [16] Diddams S A, Vahala K, Udem T. Optical frequency combs: Coherently uniting the electromagnetic spectrum[J]. Science, 2020, 369(6501): eaay3676.
    [17] Ravi A. Topics in precision astrophysical spectroscopy[D]. Harvard University, 2020.
    [18] Obrzud E, Rainer M, Harutyunyan A, et al. A microphotonic astrocomb[J]. Nature Photonics, 2019, 13(1):31-35.
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History
  • Received:July 31,2024
  • Revised:September 23,2024
  • Adopted:October 23,2024
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