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Proceedings Paper

Terahertz wave generation from laser-induced air plasma influenced by the external electric field
Author(s): Aoxue Yu; Liangliang Zhang; Shijia Feng; Tong Wu; Cunlin Zhang
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Paper Abstract

Terahertz wave generation from laser induced air plasma has a close relevance with the applied external electric field. In this paper, by applying a high-voltage DC electric filed onto the laser induced air plasma, we demonstrated that the amplitude of generated terahertz wave increases linearly with the external electric field strength, the terahertz amplitude and power are quadratic in the lower power region and the terahertz amplitude is linear with the pump light power in the high power region. Moreover, the polarization direction of the generated terahertz wave changes synchronously with the direction of applied external electric field. The results proved the effect of external electric field on the power and polarization of terahertz wave generation from laser induced air plasma.

Paper Details

Date Published: 12 March 2020
PDF: 6 pages
Proc. SPIE 11441, 2019 International Conference on Optical Instruments and Technology: IRMMW-THz Technologies and Applications, 1144105 (12 March 2020); doi: 10.1117/12.2541003
Show Author Affiliations
Aoxue Yu, Capital Normal Univ. (China)
Liangliang Zhang, Capital Normal Univ. (China)
Shijia Feng, Beijing Institute of Technology (China)
Tong Wu, Beijing Institute of Technology (China)
Cunlin Zhang, Capital Normal Univ. (China)


Published in SPIE Proceedings Vol. 11441:
2019 International Conference on Optical Instruments and Technology: IRMMW-THz Technologies and Applications
Cunlin Zhang; Xi-Cheng Zhang; Zhiming Huang, Editor(s)

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