Title :
Electron acceleration in a single-cycle terahertz field
Author :
Huang, W. Ronny ; Nanni, Emilio A. ; Ravi, Koustuban ; Liang Jie Wong ; Kyung-Han Hong ; Kartner, Franz X.
Author_Institution :
Massachusetts Inst. of Technol., Cambridge, MA, USA
Abstract :
We experimentally observe the acceleration of photo-electrons in a single-cycle terahertz (THz) field centered at 0.45 THz. The electrons are emitted from a copper surface via two-photon ionization of ~0.5 ps green laser pulses, and then accelerated by a THz pulse incident at an oblique angle. Electron acceleration up to 64 eV is demonstrated in a THz field strength of 72 MV/m.
Keywords :
copper; electron accelerators; electron emission; ionisation; two-photon processes; Cu; THz pulse; copper surface; electron emission; green laser pulse; photoelectron acceleration; single-cycle terahertz field; two-photon ionization; Acceleration; Copper; Delays; Free electron lasers; Optical surface waves; Photoconductivity; Surface emitting lasers;
Conference_Titel :
Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2014 39th International Conference on
Conference_Location :
Tucson, AZ
DOI :
10.1109/IRMMW-THz.2014.6956206
