Broadband 1T-polytype tantalum disulfide saturable absorber for solid-state bulk lasers

作     者：MENGXIA WANG HAILONG QIU TIANWEN YANG ZHENGPING WANG CHUANRUI ZHAO YUANAN ZHAO TING YU YUYAO JIANG MEILING CHEN YAFEI LIAN GE ZHANG HONGJUN LIU ZHANGGUI HU JIANDA SHAO MENGXIA WANG;HAILONG QIU;TIANWEN YANG;ZHENGPING WANG;CHUANRUI ZHAO;YUANAN ZHAO;TING YU;YUYAO JIANG;MEILING CHEN;YAFEI LIAN;GE ZHANG;HONGJUN LIU;ZHANGGUI HU;JIANDA SHAO

作者机构：Laboratory of Thin Film OpticsShanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of SciencesBeijing 100049China Tianjin Key Laboratory of Functional Crystal MaterialsInstitute of Functional CrystalTianjin University of TechnologyTianjin 300384China State Key Laboratory of Crystal MaterialsShandong UniversityJinan 250100China Laboratory of High Power Fiber Laser TechnologyShanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China College of ScienceShanghai UniversityShanghai 200444China Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of SciencesHangzhou 310024China 

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

年 卷 期：2022年第10卷第9期

页      面：2122-2132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 Key Research and Development Program of China(2018YFE0115900) National Natural Science Foundation of China(11874369,51802218,51972229,52002271) China Postdoctoral Science Foundation(2021M703326) CAS Special Research Assistant Project Key Foreign Cooperation Projects of the Bureau of International Cooperation of the Chinese Academy of Sciences(181231KYSB20210001) National Defense Science and Technology 173 Program(2021-JCJQ-JJ-0639) 

主　　题：saturable switched absorber 

摘      要：1T-polytype tantalum disulfide(1T-TaS_(2)),an emerging strongly correlated material,features a narrow bandgap of 0.2 e V,bridging the gap between zero-bandgap graphene and large-bandgap 2D nonlinear optical(NLO)*** with its intense light absorption,high carrier concentration,and high mobility,1T-TaS_(2) shows considerable potential for applications in broadband optoelectronic ***,its NLO characteristics and related applications have rarely been ***,1T-TaS_(2) nanosheets are prepared by chemical vapor *** ultrafast carrier dynamics in the 400–1100 nm range and broadband NLO performance in the 515–2500 nm range are systematically studied using femtosecond *** obvious saturable absorption phenomenon is observed in the visible to IR *** nonlinear absorption coefficient is measured to be-22.60±0.52 cm MW-1under 1030 nm,which is larger than that of other typical 2D saturable absorber(SA)materials(graphene,black phosphorus,and MoS_(2))under similar experimental *** on these findings,using 1T-TaS_(2) as a new SA,passively Q-switched laser operations are successfully performed at 1.06,1.34,and 1.94μ*** results highlight the promise of 1T-TaS_(2) for broadband optical modulators and provide a potential candidate material system for mid-IR nonlinear optical applications.