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1.中国科学院长春光学精密机械与物理研究所 特种发光科学与技术全国重点实验室, 吉林 长春 130033
2.中国科学院大学 光电学院, 北京 100049
3.吉光半导体科技有限公司, 吉林 长春 130022
4.吉林大学电子科学与工程学院 集成光电子全国重点实验室吉林大学实验区, 吉林 长春 130012
李尧(1999-),男,山东青岛人,硕士研究生,2023年于哈尔滨理工大学获得学士学位,主要从事硅基混合集成可调谐激光器的研究。E-mail: liyao232@mails.ucas.ac.cn
梁磊(1985-),男,山东日照人,博士,研究员,博士生导师,2014年于吉林大学获得博士学位,主要从事半导体光放大器及硅基集成激光器的研究。E-mail: liangl@ciomp.ac.cn
收稿:2026-02-03,
修回:2026-02-28,
纸质出版:2026-07-25
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李尧,梁磊,宋悦等.基于硅基氮化硅三微环外腔反馈的S波段可调谐窄线宽激光器[J].发光学报,2026,47(07):1259-1268.
LI Yao,LIANG Lei,SONG Yue,et al.S-band Tunable Narrow-linewidth Laser Based on Silicon Nitride Three-microring External Cavity Feedback[J].Chinese Journal of Luminescence,2026,47(07):1259-1268.
李尧,梁磊,宋悦等.基于硅基氮化硅三微环外腔反馈的S波段可调谐窄线宽激光器[J].发光学报,2026,47(07):1259-1268. DOI: 10.37188/CJL.20260041. CSTR: 32170.14.CJL.20260041.
LI Yao,LIANG Lei,SONG Yue,et al.S-band Tunable Narrow-linewidth Laser Based on Silicon Nitride Three-microring External Cavity Feedback[J].Chinese Journal of Luminescence,2026,47(07):1259-1268. DOI: 10.37188/CJL.20260041. CSTR: 32170.14.CJL.20260041.
面向调频连续波光学相控阵激光雷达对宽调谐、窄线宽光源的需求,提出了一种覆盖S波段的氮化硅三微环外腔可调谐窄线宽激光器。该设计采用低损耗Si₃N₄波导与InP基反射式半导体光放大器混合集成,通过三微环游标滤波机制实现88 nm(1 450~1 538 nm)的宽调谐范围,并利用长外腔结构与高
Q
值微环将线宽压缩至约0.89 kHz,同时结合可调Sagnac环形反射镜优化反馈稳定性。仿真结果表明,该激光器在调谐范围、线宽及边模抑制比等方面均满足调频连续波光学相控阵激光雷达系统对S波段光源的要求,而且其S波段输出不仅适配Ge/Si探测器的高响应特性,还可作为现有C+L波段光源的频谱补充,未来通过片上集成可实现S+C+L全波段覆盖,为支持大角度扫描的全固态激光雷达提供高性能、可扩展的光源解决方案。
To address the demand for widely tunable, narrow-linewidth light sources in frequency-modulated continuous-wave (FMCW) optical phased array (OPA) LiDAR, this paper presents an S-band tunable narrow-linewidth laser based on a silicon nitride triple-micro-ring external cavity. The design utilizes hybrid integration of low-loss Si₃N₄ waveguides and an InP-based reflective semiconductor optical amplifier. Through a triple-micro-ring vernier filtering mechanism, a broad tuning range of 88 nm (1 450-1 538 nm) is achieved, while a long external cavity structure combined with high-
Q
micro-rings narrows the linewidth to approximately 0.89 kHz. Feedback stability is further enhanced by incorporating a tunable Sagnac loop reflector. Simulation results confirm that the laser meets key requirements, including tuning rang
e, linewidth, and side‑mode suppression ratio, for S‑band sources in FMCW OPA LiDAR systems. Moreover, the S‑band output not only matches the high responsivity of Ge/Si photodetectors but also spectrally complements existing C‑ and L‑band sources. Future on‑chip integration could enable full S+C+L band coverage, offering a high‑performance and scalable laser solution for solid‑state LiDAR supporting wide‑angle beam steering.
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