Theoretical investigation of tunable polarized broadband terahertz radiation from magnetized gas plasma

被引：4

作者：

Gu, Xin-Yang ^{[1
]}

Liu, Jin-Song ^{[1
]}

Yang, Zhen-Gang ^{[2
]}

Wang, Sheng-Lie ^{[2
]}

Wang, Ke-Jia ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Hubei, Peoples R China

[2] Huazhong Univ Sci & Technol, Sch Opt & Elect Informat, Wuhan 430074, Hubei, Peoples R China

来源：

CHINESE PHYSICS B | 2018年 / 27卷 / 05期

基金：

中国国家自然科学基金;

关键词：

terahertz; plasma; magnetic field; polarization; AIR PHOTONICS; 100; T; GENERATION; PULSES; EMISSION; FIELDS;

D O I：

10.1088/1674-1056/27/5/058701

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The mechanism of terahertz (THz) pulse generation with a static magnetic field imposed on a gas plasma is theoretically investigated. The investigation demonstrates that the static magnetic field alters the electron motion during the optical field ionization of gas, leading to a two-dimensional asymmetric acceleration process of the ionized electrons. Simulation results reveal that elliptically or circularly polarized broadband THz radiation can be generated with an external static magnetic field imposed along the propagation direction of the two-color laser. The polarization of the THz radiation can be tuned by the strength of the external static magnetic field.

引用

页数：6

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