Terahertz wave generation in air by femtosecond optical vortex pulses
Paper in proceedings, 2019

Terahertz (THz) radiation is of great current interest due to many applications such as nonlinear THz spectroscopy and imaging. One of the compact and effective methods to obtain very high THz field strengths and extremely broadband spectral widths is THz wave generation from plasma filaments formed in air by focused bichromatic femtosecond laser pulses consisting of the first and the second harmonics (FH, SH). Here we investigate the effect of an azimuthal phase modulation of the SH carrying an optical vortex charge on the intensity and phase distribution of the THz pulse emitted from the laser induced plasma filament in air. We present both experimental and theoretical results. © 2019 IEEE.

Author

Maksym Ivanov

Vilnius University

Illia Thiele

Chalmers, Physics, Subatomic and Plasma Physics

Stefan Skupin

Institut Lumière matière

Danas Buožius

Vilnius University

Virgilijus Vaičaitis

Vilnius University

2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019

8873063

2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019
Munich, Germany,

Subject Categories

Atom and Molecular Physics and Optics

Other Physics Topics

Fusion, Plasma and Space Physics

DOI

10.1109/CLEOE-EQEC.2019.8873063

ISBN

9781557528209

More information

Latest update

7/29/2020