Injection Locking Study of Terahertz Quantum Cascade Laser Frequency Combs

会议论文
发表日期：

2024年

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Yu Ma,
Rusong Li,
Shichen Zhang,
Binru Zhou,
Quanyong Lu,
Jinchuan Zhang,
Shenqiang Zhai,
Junqi Liu,
Shuman Liu,
Ning Zhuo,
Fengqi Liu

摘要

We prepare the side absorbers with Ni on both sides of the double-metal waveguide device. Meanwhile, ground backed coplanar waveguides are used to improve the high-speed characteristic of the device for the RF injection locking. Locking bandwidth up to 50 MHz at RF injection power of 0 dBm. RF modulation not only locks the phases but also modifies the laser spectral bandwidth by up to 660 GHz.