Terahertz wave emission from the trigonal layered PtBi2

iScience

Jingbo Qi¹  Tian Xiang²  Liang Cheng²  Yunhe Pei²  Yu Gao² 

[1] Corresponding author;State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China;

关键词: Transport property of condensed matter;    Radiation physics;    Nanomaterials;   

DOI  :  

来源: DOAJ

【 摘 要 】

Summary: In this work, broadband terahertz (THz) wave emissions have been detected from the trigonal layered PtBi2 on the excitation of the femtosecond laser pulses. Such THz generation is found to arise from the dominated linear photogalvanic effect, which is further discovered to strongly depend on the unique electronic structures of PtBi2. Furthermore, an effective nonlinear susceptibility of PtBi2 is also obtained and is nearly two orders of magnitude larger than that of the traditional nonlinear crystal for THz generation.

【 授权许可】

Unknown