摘要
With the rapid growth of optical communications traffic,the demand for broadband optical amplifiers continues to increase.It is necessary to develop a gain medium that covers more optical communication bands.We precipitated PbS quantum dots(QDs) and Ba F_(2):Tm^(3+) nanocrystals (NCs) in the same glass to form two independent emission centers.The Ba F_(2)NCs in the glass can provide a crystal field environment with low phonon energy for rare earth (RE) ions and prevent the energy transfer between RE ions and PbS QDs.By adjusting the heat treatment schedule,the emission of the two luminescence centers from PbS QDs and Tm^(3+) ions perfectly splices and covers the ultra-broadband near-infrared emission from 1200 nm to 2000 nm with bandwidth over 430 nm.Therefore,it is expected to be a promising broadband gain medium for fiber amplifiers.
作者
Wei Wang
Qinpeng Chen
Yifei Zhao
Yakun Le
Shengda Ye
Mang Wan
Xiongjian Huang
Guoping Dong
王伟;陈钦鹏;赵逸飞;乐亚坤;叶昇达;万芒;黄雄健;董国平(State Key Laboratory of Luminescent Materials and Devices,Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques,Guangdong Engineering Technology Research and Development Center of Special Optical Fiber Materials and Devices,School of Materials Science and Engineering,South China University of Technology,Guangzhou 510640,China;Department of Chemistry,City University of Hong Kong,Kowloon 999077,Hong Kong,China;Analytical and Testing Center,South China University of Technology,Guangzhou 510640,China;School of Physics and Optoelectronics,South China University of Technology,Guangzhou 510640,China)
基金
This work was financially supported by the Key R&D Program of Guangzhou(No.202007020003)
National Natural Science Foundation of China(Nos.62122027,52002128,62075063,51772101,and 51872095)
China Postdoctoral Science Foundation(Nos.2020M672621 and 2021M691054)
Local Innovative and Research Teams Project of Guangdong Pearl River Talents Program(No.2017BT01X137)
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology(No.2020KF-19)。
