Title :
Passive imaging using a 4K-cryocooled THz photoconductive detector system with background-limited performance
Author :
Aoki, Makoto ; Tripathi, Saroj R. ; Takeda, Masanori ; Hiromoto, Norihisa
Author_Institution :
Grad. Sch. of Sci. & Technol., Shizuoka Univ., Shizuoka, Japan
Abstract :
We have demonstrated THz passive imaging of a razor blade, a coin and a paper written by a pencil concealed in a plastic package and an envelope using a high-sensitive THz photoconductive detector system. In our imaging system, we achieved a background limited NEP of 1.0×10-14 W/√Hz in the frequency range of 1.5-3THz.
Keywords :
cryogenics; optical images; photoconducting devices; terahertz wave imaging; background limited performance; coin; cryocooled; frequency 1.5 THz to 3 THz; paper; photoconductive detector system; razor blade; terahertz passive imaging; Blades; Detectors; Imaging; Optical detectors; Optical filters; Plastics; Safety;
Conference_Titel :
Infrared, Millimeter and Terahertz Waves (IRMMW-THz), 2011 36th International Conference on
Conference_Location :
Houston, TX
Print_ISBN :
978-1-4577-0510-6
Electronic_ISBN :
2162-2027
DOI :
10.1109/irmmw-THz.2011.6104978
