9 April 2015 Terahertz wave absorption via femtosecond laser-filament concatenation
Author Affiliations +
Abstract
Terahertz (THz) emission from laser-induced air plasma is a well known and widely used phenomenon. We report that when two laser beams from the laser creating two plasma filaments interact with each other, THz absorption is observed. We believe that a change in the refractive index of the plasma causes the THz-wave absorption. The following experimental results reveal that the THz absorption becomes more pronounced with increasing pump power and that the gas species surrounding the femtosecond laser filament can also influence the THz absorption rate.
© 2015 Society of Photo-Optical Instrumentation Engineers (SPIE)
Ji Zhao, Ji Zhao, LiangLiang Zhang, LiangLiang Zhang, Tong Wu, Tong Wu, XiaoYan Xu, XiaoYan Xu, CunLin Zhang, CunLin Zhang, YueJin Zhao, YueJin Zhao, } "Terahertz wave absorption via femtosecond laser-filament concatenation," Optical Engineering 54(4), 046104 (9 April 2015). https://doi.org/10.1117/1.OE.54.4.046104 . Submission:
JOURNAL ARTICLE
4 PAGES


SHARE
RELATED CONTENT

Experiment of THz transmission through plasma
Proceedings of SPIE (December 02 2014)
The study of gas species on THz generation from laser...
Proceedings of SPIE (August 30 2015)
Terahertz t-ray tomography
Proceedings of SPIE (November 12 1998)

Back to Top