光学
激光器
激光线宽
材料科学
相位噪声
注入锁定
光电子学
分布反馈激光器
波长
物理
作者
Hong Liang,Ying Kang,Wei Fang,Yanguang Sun,Zhaoyong Wang,Dijun Chen,Fei Yang,Haiwen Cai
出处
期刊:Applied Optics
[The Optical Society]
日期:2020-10-15
卷期号:59 (30): 9393-9393
被引量:1
摘要
A linearly swept laser source over broadband with a fast sweep rate and narrow linewidth is realized using a novel optoelectronic scheme based on a multi-wavelengths (mutually coherent) injected distributed feedback (DFB) laser. Under the condition of multi-wavelengths injection, the injection-locking and four-wave mixing (FWM) process can occur simultaneously in the DFB laser, inducing a swept laser source with a sweep range of 100 GHz and sweep rate of 10 THz/s. Furthermore, with the phase noise character analyzation of the swept laser source, the phase noise deterioration due to the radio frequency (RF) signal is studied quantitatively. Besides the influence of the RF signal noise, the phase noise deterioration in the FWM process can be suppressed completely with the phase-locked pump beam and signal beam based on the injection-locking principle. This low phase noise swept laser source with sub-kilohertz linewidth could have wide applications in lidar.
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