Terahertz wave emission from the trigonal layered PtBi2

被引：6

作者：

Gao, Yu ^{[1
]}

Pei, Yunhe ^{[1
]}

Xiang, Tian ^{[1
]}

Cheng, Liang ^{[1
]}

Qi, Jingbo ^{[1
]}

机构：

[1] Univ Elect Sci & Technol China, State Key Lab Elect Thin Films & Integrated Devic, Chengdu 610054, Peoples R China

来源：

ISCIENCE | 2022年 / 25卷 / 07期

基金：

中国国家自然科学基金;

关键词：

Nanomaterials; Radiation physics; Transport property of condensed matter;

D O I：

10.1016/j.isci.2022.104511

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

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.

引用

页数：13

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