Title :
Ultra-fast sampling of terahertz pulses from a quantum cascade laser using superconducting antenna-coupled NbN and YBCO detectors
Author :
Dean, Paul ; Valavanis, Alex ; Scheuring, Alexander ; Stockhausen, Axel ; Probst, Petra ; Salih, Mohammed ; Khanna, Suraj P. ; Chowdhury, Siddhant ; Wuensch, Stefan ; Il´in, Konstantin ; Linfield, Edmund H. ; Davies, A. Giles ; Siegel, Michael
Author_Institution :
Sch. of Electron. & Electr. Eng., Univ. of Leeds, Leeds, UK
Abstract :
We demonstrate the ultra-fast detection of terahertz pulses from a quantum cascade laser (QCL) using superconducting NbN and YBCO detectors. This has enabled both the intrapulse and interpulse dynamics of a THz QCL to be measured directly, including interpulse heating effects on sub-μs timescales.
Keywords :
barium compounds; niobium compounds; quantum cascade lasers; superconducting devices; terahertz wave detectors; yttrium compounds; NbN; YBCO; interpulse dynamics; interpulse heating effects; intrapulse dynamics; quantum cascade laser; superconducting antenna-coupled detectors; terahertz pulses; ultra-fast detection; ultra-fast sampling; Current measurement; Detectors; Heating; Quantum cascade lasers; Temperature; Temperature measurement; Yttrium barium copper oxide;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2012 37th International Conference on
Conference_Location :
Wollongong, NSW
Print_ISBN :
978-1-4673-1598-2
Electronic_ISBN :
2162-2027
DOI :
10.1109/IRMMW-THz.2012.6380341
