中国物理B ›› 2018, Vol. 27 ›› Issue (5): 58701-058701.doi: 10.1088/1674-1056/27/5/058701
• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇 下一篇
Theoretical investigation of tunable polarized broadband terahertz radiation from magnetized gas plasma
Xin-Yang Gu(顾新杨), Jin-Song Liu(刘劲松), Zhen-Gang Yang(杨振刚), Sheng-Lie Wang(汪盛烈), Ke-Jia Wang(王可嘉)
- 1 Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China;
2 School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China
Theoretical investigation of tunable polarized broadband terahertz radiation from magnetized gas plasma
Xin-Yang Gu(顾新杨)1, Jin-Song Liu(刘劲松)1, Zhen-Gang Yang(杨振刚)2, Sheng-Lie Wang(汪盛烈)2, Ke-Jia Wang(王可嘉)1
- 1 Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China;
2 School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China
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.
中图分类号:
- 87.50.U-