Title :
Transient analysis of substrate heating effects in a terahertz quantum cascade laser using an ultrafast NbN superconducting detector
Author :
Valavanis, A. ; Dean, P. ; Scheuring, Alexander ; Salih, Mohammed ; Stockhausen, Axel ; Wuensch, Stefan ; Il´in, Konstantin ; Chowdhury, Shuvro ; Khanna, Suraj P. ; Siegel, Mel ; Davies, A. Giles ; Linfield, Edmund H.
Author_Institution :
Sch. of Electron. & Electr. Eng., Univ. of Leeds, Leeds, AL, USA
Abstract :
We use an ultrafast NbN superconducting detector to investigate dynamic bulk heat-storage effects in a THz QCL. A first-order heat-accumulation model is used to obtain reliable estimates of the thermal resistance and heat capacity from the measured temperature variation.
Keywords :
heating; quantum cascade lasers; specific heat; superconducting devices; thermal resistance; thermal variables measurement; NbN; dynamic bulk heat storage effect; heat capacity; substrate heating effect; temperature variation; terahertz quantum cascade laser; thermal resistance; transient analysis; ultrafast superconducting detector; Detectors; Power measurement; Quantum cascade lasers; Resistance heating; Substrates; Temperature measurement;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2013 38th International Conference on
Conference_Location :
Mainz
DOI :
10.1109/IRMMW-THz.2013.6665498
