Title :
Two-dimensional imaging with plasmagenerated terahertz waves
Author :
Zhong, H. ; Karpowicz, N. ; Zhang, X.-C.
Author_Institution :
Rensselaer Polytech. Inst., Troy
Abstract :
Terahertz (THz) waves generated through four-wave mixing in laser-induced air plasmas are an ideal source for imaging arbitrary locations. Under an amplified laser beam, ionized ambient air as a mixing medium provides broadband pulses with an unprecedented THz electric field strength among all the optically induced THz waves from nonlinear materials. We report the use of plasma-induced THz waves for 2D imaging for the first time, and compare it to other methods.
Keywords :
multiwave mixing; plasma production by laser; submillimetre wave generation; submillimetre wave imaging; 2D imaging; broadband pulse; electric field strength; four-wave mixing; imaging arbitrary location; laser-induced air plasmas; nonlinear materials; plasma-generated terahertz waves; Four-wave mixing; Ion beams; Laser beams; Nonlinear optics; Optical imaging; Optical pulses; Plasma materials processing; Plasma sources; Plasma waves; Pulse amplifiers;
Conference_Titel :
Infrared Millimeter Waves and 14th International Conference on Teraherz Electronics, 2006. IRMMW-THz 2006. Joint 31st International Conference on
Conference_Location :
Shanghai
Print_ISBN :
1-4244-0400-2
Electronic_ISBN :
1-4244-0400-2
DOI :
10.1109/ICIMW.2006.368543
