Terahertz wave guiding by femtosecond laser filament in air

Author

Jiayu Zhao ; Yizhu Zhang ; Zhi Wang ; Wei Chu ; Bin Zeng ; Ya Cheng ; Zhizhan Xu ; Weiwei Liu

Author_Institution

Key Lab. of Opt. Inf. Sci. & Technol., Nankai Univ., Tianjin, China

fYear

2014

fDate

8-13 June 2014

Firstpage

1

Lastpage

2

Abstract

In this paper, superluminal propagation of terahertz (THz) pulse has been observed by investigating the THz waveform emitted from different length of filaments. Further numerical simulation has implied that a THz waveguide-like photonic structure may be formed in air, leading to the superluminal propagation of the THz pulse. The underlying physical mechanisms and the control techniques of this type THz generation method might be revisited based on our findings. It might also potentially open a new approach for long-distance propagation of THz wave in air.

Keywords

laser beams; nonlinear optics; numerical analysis; optical control; plasma filled waveguides; plasma light propagation; plasma simulation; terahertz wave generation; THz generation method; THz waveform; THz waveguide-like photonic structure; air; control techniques; femtosecond laser filament; filament length; long-distance propagation; numerical simulation; physical mechanisms; superluminal propagation; terahertz pulse; terahertz wave guiding; Laser theory; Numerical simulation; Optical diffraction; Optical pulses; Plasmas; Ultrafast optics; Vectors;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics (CLEO), 2014 Conference on

Conference_Location

San Jose, CA

Type

conf

Filename

6988799