Title :
High sensitivity terahertz bolometers as room temperature detectors
Author :
Bevilacqua, Stella ; Cherednichenko, Sergey
Author_Institution :
Dept. of Microtechnol. & Nanosci. (MC2), Chalmers Univ. of Technol., Göteborg, Sweden
Abstract :
High sensitivity room temperature THz direct detectors made of YBa2Cu3O7-x nano-bridges, with a broadband optical coupling (0.1-2THz) are presented. An optical responsivity (Rv) up to 45 V/W was measured at 400 GHz. For bolometers with an electrical responsivity of 70 V/W a noise equivalent power (NEP) of 50 pW/Hz0.5 was experimental obtained.
Keywords :
barium compounds; bolometers; nanosensors; nanostructured materials; optical sensors; optical variables measurement; submillimetre wave detectors; temperature measurement; temperature sensors; terahertz wave detectors; yttrium compounds; NEP; YBa2Cu3O7-x; broadband optical coupling; electrical responsivity; frequency 0.1 THz to 2 THz; frequency 400 GHz; high sensitivity room temperature THz direct detector; high sensitivity terahertz bolometer; nanobridge; noise equivalent power; optical responsivity measurement; temperature 293 K to 298 K; Bolometers; Current measurement; Detectors; Noise; Optical variables measurement; Temperature sensors; Yttrium barium copper oxide;
Conference_Titel :
Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2014 39th International Conference on
Conference_Location :
Tucson, AZ
DOI :
10.1109/IRMMW-THz.2014.6956197
