Comparative study on pump frequency tuning and self-injection locking in Kerr microcomb generation

作     者：余卓佩 华卫红 张晨希 苗润林 殷科 江天 

作者机构：College of Advanced Interdisciplinary StudiesNational University of Defense Technology National Innovation Institute of Defense TechnologyAcademy of Military Sciences PLA China Institute for Quantum Science and TechnologyNational University of Defense Technology 

出 版 物：《Chinese Optics Letters》 (中国光学快报(英文版))

年 卷 期：2024年第8期

页      面：63-68页

核心收录：

学科分类：080901[工学-物理电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0803[工学-光学工程] 

基　　金：supported by the National Key R&D Program of China (No. 2020YFB2205804) the National Natural Science Foundation of China (No. 62075240) 

摘      要：The optical frequency comb has attracted considerable interest due to its diverse applications in optical atomic clocks,ultra-low-noise microwave generation, dual-comb spectroscopy, and optical communications. The merits of large frequency spacing, high integration, and low power consumption have shown that microresonator-based Kerr optical frequency combs will become mainstream in the *** methods of pump frequency tuning and self-injection locking were used to obtain Kerr combs in the same silicon nitride microresonators with free spectral ranges of 50 GHz and 100 GHz. Singlesoliton combs are realized with both methods. Simplicity, pump power, spectrum bandwidth, conversion efficiency, and linewidth are compared and analyzed. Our results show that the advantages of pump frequency tuning are a wider spectrum and higher soliton power while the advantages of self-injection locking are simplicity, compactness, low cost, significant linewidth narrowing, and high conversion efficiency.