Wang Min, Fang Zhiwei, Zhang Haisu, Lin Jintian, Zhou Junxia, Huang Ting, Zhu Yiran, Li Chuntao, Yu Shupeng, Fu Botao, Qiao Lingling, Cheng Ya
The Extreme Optoelectromechanics Laboratory (XXL), School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China.
Engineering Research Center for Nanophotonics and Advanced Instrument, School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China.
Materials (Basel). 2024 Sep 11;17(18):4453. doi: 10.3390/ma17184453.
Thin film lithium niobate (TFLN) has become a promising material platform for large scale photonic integrated circuits (PICs). As an indispensable component in PICs, on-chip electrically tunable narrow-linewidth lasers have attracted widespread attention in recent years due to their significant applications in high-speed optical communication, coherent detection, precision metrology, laser cooling, coherent transmission systems, light detection and ranging (LiDAR). However, research on electrically driven, high-power, and narrow-linewidth laser sources on TFLN platforms is still in its infancy. This review summarizes the recent progress on the narrow-linewidth compact laser sources boosted by hybrid TFLN/III-V semiconductor integration techniques, which will offer an alternative solution for on-chip high performance lasers for the future TFLN PIC industry and cutting-edge sciences. The review begins with a brief introduction of the current status of compact external cavity semiconductor lasers (ECSLs) and recently developed TFLN photonics. The following section presents various ECSLs based on TFLN photonic chips with different photonic structures to construct external cavity for on-chip optical feedback. Some conclusions and future perspectives are provided.
薄膜铌酸锂（TFLN）已成为大规模光子集成电路（PIC）的一个有前景的材料平台。作为光子集成电路中不可或缺的组件，片上电调谐窄线宽激光器近年来因其在高速光通信、相干检测、精密计量、激光冷却、相干传输系统、光探测和测距（LiDAR）中的重要应用而受到广泛关注。然而，在TFLN平台上对电驱动、高功率和窄线宽激光源的研究仍处于起步阶段。本综述总结了由混合TFLN/III-V族半导体集成技术推动的窄线宽紧凑型激光源的最新进展，这将为未来TFLN光子集成电路产业和前沿科学的片上高性能激光器提供一种替代解决方案。综述首先简要介绍了紧凑型外腔半导体激光器（ECSL）的现状和最近发展的TFLN光子学。接下来的部分介绍了基于具有不同光子结构的TFLN光子芯片的各种ECSL，以构建用于片上光反馈的外腔。最后给出了一些结论和未来展望。
