Translator Disclaimer
9 November 2018 The study of terahertz wave generation via pre-ionized air plasma
Author Affiliations +
Abstract
The methods of terahertz (THz) wave generation has attracted considerable attention in recent years because it involves a complex plasma process. The theories used to explain the intrinsic mechanism of laser ionization of air to produce THz wave are not particularly numerous, further exploration of its mechanism in the air is necessary. We report the THz wave generation from single color scheme modulated by pre-ionized air plasma via an orthogonal pumping geometry. It is found that the amplitude of the THz signal generated by the pump beam tends to decrease gradually with the increase of the modulation power. We believe that the ponderomotive force plays an important role in the process of the interaction between the pump beam and pre-ionization beam. The hydrostatic state of the electrostatic separation field caused by modulation beam will directly affect the generation efficiency of the THz wave. Our results contribute to further understanding of the theoretical mechanism and expanding of the practical applications of THz wave generation and modulation.
© (2018) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Kai Kang, Liangliang Zhang, Tong Wu, Kai Li, Bo Peng, and Cunlin Zhang "The study of terahertz wave generation via pre-ionized air plasma", Proc. SPIE 10826, Infrared, Millimeter-Wave, and Terahertz Technologies V, 108261F (9 November 2018); https://doi.org/10.1117/12.2501389
PROCEEDINGS
5 PAGES


SHARE
Advertisement
Advertisement
Back to Top