A 51-dB signal-to-noise ratio carrier-envelope offset frequency in an environmentally stabilized polarization-maintaining optical frequency comb

doi:10.1088/1674-1056/ae0924

中国物理B ›› 2026, Vol. 35 ›› Issue (6): 64206-064206.doi: 10.1088/1674-1056/ae0924

A 51-dB signal-to-noise ratio carrier-envelope offset frequency in an environmentally stabilized polarization-maintaining optical frequency comb

Yuyao Zong(宗玉瑶)^1,2,3,†, Yi Han(韩羿)^2,3,†, Jiawei Liu(刘佳伟)^2,3, Cheng Ci(慈骋)¹, Zhenyu Xue(薛振宇)¹, and Shiying Cao(曹士英)^2,3,‡

1 College of Information Engineering, China Jiliang University, Hangzhou 310018, China;
2 Division of Time and Frequency Metrology, National Institute of Metrology, Beijing 100029, China;
3 Key Laboratory of State Administration for Market Regulation, Time Frequency and Gravity Primary Standard, Beijing 100029, China

收稿日期:2025-08-09 修回日期:2025-09-08 接受日期:2025-09-19 发布日期:2026-06-01
通讯作者: Shiying Cao E-mail:caoshiying@nim.ac.cn
基金资助:
Project supported by the National Key Research and Development Program of China (Grant No. 2021YFF0603801), and the Scientific Research Foundation of the National Institute of Metrology, China (Grant Nos. AKYZD2411 and AKYZD2511).

A 51-dB signal-to-noise ratio carrier-envelope offset frequency in an environmentally stabilized polarization-maintaining optical frequency comb

Yuyao Zong(宗玉瑶)^1,2,3,†, Yi Han(韩羿)^2,3,†, Jiawei Liu(刘佳伟)^2,3, Cheng Ci(慈骋)¹, Zhenyu Xue(薛振宇)¹, and Shiying Cao(曹士英)^2,3,‡

1 College of Information Engineering, China Jiliang University, Hangzhou 310018, China;
2 Division of Time and Frequency Metrology, National Institute of Metrology, Beijing 100029, China;
3 Key Laboratory of State Administration for Market Regulation, Time Frequency and Gravity Primary Standard, Beijing 100029, China

Received:2025-08-09 Revised:2025-09-08 Accepted:2025-09-19 Published:2026-06-01
Contact: Shiying Cao E-mail:caoshiying@nim.ac.cn
Supported by:
Project supported by the National Key Research and Development Program of China (Grant No. 2021YFF0603801), and the Scientific Research Foundation of the National Institute of Metrology, China (Grant Nos. AKYZD2411 and AKYZD2511).

摘要/Abstract

摘要： A femtosecond optical frequency comb (OFC) based on a laser with a nonlinear amplification loop mirror mode-locking mechanism is proposed. The laser adopts a fully polarization-maintaining (PM) structure, which can realize self-starting mode-locking at the center wavelength of 1560.2 nm with a 195.65 MHz repetition rate at a pump power of 630 mW, and the frequency stability after phase-locking is 1.95$\times10^{-12}$ with a 1-s averaging time. Through a homemade $f$-2$f$ interferometer, the detected free-running $f_{\rm ceo}$ signal exhibits a signal-to-noise ratio (SNR) as high as 51 dB. After phase-locking, $f_{\rm ceo}$ has a frequency stability of 1.17$\times 10^{-11}$ with a 1-s averaging time.

关键词: optical frequency comb, Er-doped mode-locked laser, $f_{\rm ceo}$ linewidth optimization, pre-chirp amplification

Abstract: A femtosecond optical frequency comb (OFC) based on a laser with a nonlinear amplification loop mirror mode-locking mechanism is proposed. The laser adopts a fully polarization-maintaining (PM) structure, which can realize self-starting mode-locking at the center wavelength of 1560.2 nm with a 195.65 MHz repetition rate at a pump power of 630 mW, and the frequency stability after phase-locking is 1.95$\times10^{-12}$ with a 1-s averaging time. Through a homemade $f$-2$f$ interferometer, the detected free-running $f_{\rm ceo}$ signal exhibits a signal-to-noise ratio (SNR) as high as 51 dB. After phase-locking, $f_{\rm ceo}$ has a frequency stability of 1.17$\times 10^{-11}$ with a 1-s averaging time.

Key words: optical frequency comb, Er-doped mode-locked laser, $f_{\rm ceo}$ linewidth optimization, pre-chirp amplification

中图分类号: (Fiber lasers)

42.55.Wd

42.65.-k (Nonlinear optics) 06.30.Ft (Time and frequency)

Yuyao Zong(宗玉瑶), Yi Han(韩羿), Jiawei Liu(刘佳伟), Cheng Ci(慈骋), Zhenyu Xue(薛振宇), and Shiying Cao(曹士英). A 51-dB signal-to-noise ratio carrier-envelope offset frequency in an environmentally stabilized polarization-maintaining optical frequency comb[J]. 中国物理B, 2026, 35(6): 64206-064206.

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A 51-dB signal-to-noise ratio carrier-envelope offset frequency in an environmentally stabilized polarization-maintaining optical frequency comb

A 51-dB signal-to-noise ratio carrier-envelope offset frequency in an environmentally stabilized polarization-maintaining optical frequency comb

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