Terahertz generation from laser-induced plasma

Enhancement of terahertz wave generation from laser induced plasma

Generation of elliptically polarized terahertz waves from laser-induced plasma with double helix electrodes.

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. Extensive simulations, includin...

Terahertz generation in multiple laser-induced air plasmas

Meng-Ku Chen, Jae Hun Kim, Chia-En Yang, Stuart Shizhuo Yin, Rongqing Hui, and Paul Ruffin Department of Electrical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, USA Department of Electrical Engineering and Computer Science, The University of Kansas, Lawrence, Kansas 66045, USA US Army Aviation and Missile Research Development and Engineering Center, Redst...

Efficient Terahertz Pulse Generation in Laser-Induced Gas Plasmas

With state-of-the-art amplifier laser systems one easily reaches pulse energies sufficient to ionize atoms and molecules in focused beams. If this is done in a gaseous medium at ambient pressure (e.g., in air), a plasma with a length of a few hundred μm and a diameter of up to 100 μm can be produced by a 1 kHz 150 fs Ti:sapphire laser system with laser pulse energies in the 500 μJ regime. The p...

Generation and Detection of Terahertz Radiation from Laser-Plasmas

View Online References[1] X.-Y. Pen; J.-H. Teng; X.-H. Zhang; Y.-L. Foo, Distortionanalysis of pulsed terahertz signal measured with spectral-encod-ing technique. Journal of Applied Physics 108, 093112 (2010);doi:10.1063/1.3499639[2] X.-Y. Peng; J. Teng; H. Liu; H. Tanoto; H. Guo; Z.-M. Sheng;J. Zhang, Distortion reduction in strong terahertz signals usingbroadba...