梳状发生器
光学
频率梳
材料科学
级联
带宽(计算)
频率调制
激光器
光学频率梳
光纤激光器
调制(音乐)
光电子学
物理
电信
声学
计算机科学
化学
色谱法
作者
Changhe Wang,Yuxin Sun,Qilai Zhao,Changsheng Yang,Chenghui Zeng,Zhouming Feng,Yu Zhang,L Li,Kaijun Zhou,Xiaoming Wei,Zhongmin Yang,Shanhui Xu
出处
期刊:Optics Letters
[The Optical Society]
日期:2023-08-31
卷期号:48 (17): 4665-4665
摘要
An ultrafine electro-optical frequency comb (EOFC) with plentiful comb teeth is demonstrated. Adopting a single-frequency fiber laser as a light source, cascade phase modulation based on a sinusoidal signal and a frequency-time transformation (FTT) signal is executed to generate the EOFC with high fineness. Meanwhile, a cyclic fast frequency shifting strategy is introduced to boost the number of comb teeth and the bandwidth of the EOFC. As a result, an EOFC with 12600 comb lines covering a broad bandwidth from -6.3 GHz to 6.3 GHz is established, corresponding to an ultrafine comb space of 1 MHz. Moreover, the power fluctuation of a comb tooth is less than 0.5 dBm. This state-of-the-art EOFC has significant potential in the field of precision spectroscopy.
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