Mitigating fast thermal instability by engineered laser sweep in AlN soliton microcomb generation

作     者：KEWEI LIU ZIHAO WANG SHUNYU YAO YANAN GUO JIANCHANG YAN JUNXI WANG CHANGXI YANG CHENGYING BAO KEWEI LIU;ZIHAO WANG;SHUNYU YAO;YANAN GUO;JIANCHANG YAN;JUNXI WANG;CHANGXI YANG;CHENGYING BAO

作者机构：State Key Laboratory of Precision Measurement Technology and InstrumentsDepartment of Precision InstrumentsTsinghua UniversityBeijing 100084China Center for Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of SciencesBeijing 100049China Research and Development Center for Solid State LightingInstitute of SemiconductorsChinese Academy of SciencesBeijing 100083China 

出 版 物：《Photonics Research》 (光子学研究（英文版）)

年 卷 期：2023年第11卷第8期

页      面：I0012-I0020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：National Natural Science Foundation of China(62022080,62175127,62250071) National Key Research and Development Program of China(2021YFB2801200) Tsinghua Initiative Scientific Research Program(20211080080,20221080069) Youth Innovation Promotion Association of the Chinese Academy of Sciences(2023123) SJTU-Pinghu Institute of Intelligent Optoelectronics Tsinghua-Toyota Joint Research Fund 

主　　题：tuning laser sapphire 

摘      要：Transient thermal instability represents a significant challenge in generating soliton *** laser sweep can be an efficient method to mitigate thermal instability,but it requires an ultrahigh laser sweep rate for crystalline microresonators with fast thermal ***,we engineer a laser sweep waveform to generate AlNon-sapphire soliton microcombs with an intermediate sweep speed(30 GHz∕μs).Two laser sweep methods with backward plus forward tuning or two-step backward tuning added after the fast forward laser sweep were demonstrated to stabilize *** the soliton number is found to be useful to stabilize solitons in fast laser *** effectiveness of the methods was numerically *** measurements and simulations also reveal the impacts of different thermal relaxation processes occurring at quite different time scales on thermal *** requirement of the laser sweep protocols is discussed.