Title :
Terahertz Continuous Wave Detection Using Weakly Ionized Plasma in Inert Gases
Author :
Lei Hou ; Wei Shi ; Suguo Chen ; Zhijin Yan
Author_Institution :
Appl. Phys. Dept., Xian Univ. of Technol., Xian, China
Abstract :
A weakly ionized plasma detector was designed for the terahertz (THz) continuous wave detection. The effect of inert gas pressure, components, and discharge current on the detector´s responsivity and stability was investigated. Experiment results reveal that the detector´s responsivity can be as high as 194.4 V/W and its signal-to-noise ratio can reach 560 at 0.187 THz.
Keywords :
gas sensors; inert gases; plasma devices; plasma diagnostics; terahertz wave detectors; discharge current; frequency 0.187 THz; inert gas; inert gas pressure effect; signal-to-noise ratio; stability; terahertz continuous wave detection; weakly ionized plasma detector; Detector; responsivity; terahertz (THz) wave; weakly ionized plasma (WIP);
Journal_Title :
Electron Device Letters, IEEE
DOI :
10.1109/LED.2013.2252143
