Title :
Method of generating elliptically polarized terahertz waves from laser-induced plasma with double helix electrodes
Author :
Lu, Xiaofei ; Zhang, X.-C.
Author_Institution :
Dept. of Phys., Appl. Phys., & Astron., Rensselaer Polytech. Inst., Troy, NY, USA
Abstract :
By applying a helical electric field along a plasma region, a revolving electron current is formed along the plasma and an elliptically polarized far-field terahertz wave pattern is observed. The observed terahertz wave polarization reveals the remarkable role of velocity retardation between optical pulses and generated terahertz pulses in the generation process.
Keywords :
plasma light propagation; plasma transport processes; terahertz wave generation; double helix electrodes; electron current; elliptically polarized far-field terahertz wave pattern; elliptically polarized terahertz wave generation method; laser-induced plasma; optical pulses; plasma region; terahertz wave polarization; Electric fields; Electrodes; Laser beams; Laser excitation; Optical beams; Optical pulses; Plasmas;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2012 37th International Conference on
Conference_Location :
Wollongong, NSW
Print_ISBN :
978-1-4673-1598-2
Electronic_ISBN :
2162-2027
DOI :
10.1109/IRMMW-THz.2012.6380450
