Title :
On-chip THz generation and detection at milli-Kelvin temperatures for the study of ultrafast phenomena in confined semiconductor systems
Author :
Wood, C.D. ; Mistry, D. ; Li, L.H. ; Cunningham, J.E. ; Linfield, E.H. ; Davies, A.G.
Author_Institution :
Sch. of Electron. & Electr. Eng., Univ. of Leeds, Leeds, UK
Abstract :
We present a new measurement technique for the sub-Kelvin excitation and detection of on-chip terahertz frequency radiation in high magnetic fields. We present a monolithically integrated heterostructure, which allows a mesoscopic electronic system to be combined with an on-chip terahertz device, and show dynamic imaging of a THz photoconductive switch at 200 mK in a 12 T field, together with THz signal propagation at 100 mK. These capabilities will advance significantly the study of ultrafast phenomena in mesoscopic semiconductor systems.
Keywords :
III-V semiconductors; aluminium compounds; coplanar waveguides; gallium arsenide; mesoscopic systems; semiconductor devices; semiconductor heterojunctions; terahertz wave spectra; CPW; GaAs-AlGaAs; THz photoconductive switch; THz signal propagation; confined semiconductor systems; magnetic flux density 12 T; mesoscopic electronic system; mesoscopic semiconductor systems; milliKelvin temperatures; monolithically integrated heterostructure; on-chip THz generation; on-chip terahertz device; on-chip terahertz frequency radiation; subKelvin excitation; ultrafast phenomena; Gallium arsenide; Measurement by laser beam; Optical switches; Surface emitting lasers; System-on-a-chip; Temperature measurement;
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.2012.6380088
