Title :
Mechanism of weakly ionized plasma terahertz wave detector
Author :
Lei Hou ; Wei Shi ; Yu Wu ; Hong Liu ; Yi Ding
Author_Institution :
Xi´an Univ. of Technol., Xi´an, China
Abstract :
Plasma generated in discharged noble gases has been successfully used for terahertz (THz) wave detection. We theoretically analysed the detection mechanism, and found the electrons in the weakly ionized plasma can obtain energy from the incident THz radiation and convert excitation collisions of electrons with excited neutral atoms into ionization collisions, so the ionization current increases. An experiment was designed and testified the mechanism.
Keywords :
electron impact excitation; electron impact ionisation; plasma devices; terahertz wave detectors; detection mechanism; discharged noble gas; excitation collisions; excited neutral atom; ionization collision; plasma generation; weakly ionized plasma terahertz wave detector; Detectors; Discharges (electric); Glow discharges; Imaging; Ionization; Plasmas; Schottky diodes;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2013 38th International Conference on
Conference_Location :
Mainz
DOI :
10.1109/IRMMW-THz.2013.6665748
