Terahertz wave generation in air by femtosecond optical vortex pulses
Paper i proceeding, 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.

Författare

Maksym Ivanov

Vilniaus universitetas

Illia Thiele

Chalmers, Fysik, Subatomär fysik och plasmafysik

Stefan Skupin

Institut Lumière matière

Danas Buožius

Vilniaus universitetas

Virgilijus Vaičaitis

Vilniaus universitetas

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,

Ämneskategorier

Atom- och molekylfysik och optik

Annan fysik

Fusion, plasma och rymdfysik

DOI

10.1109/CLEOE-EQEC.2019.8873063

Mer information

Senast uppdaterat

2020-01-28