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  4. High-speed infrared detection by uncooled photovoltaic quantum well infrared photodetectors
 
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1997
Journal Article
Title

High-speed infrared detection by uncooled photovoltaic quantum well infrared photodetectors

Other Title
Hochgeschwindigkeits-IR-Detektion mit ungekühlten photovoltaischen Quantum-Well-IR-Photodetektoren
Abstract
We have investigated the temporal response of uncooled photovoltaic quantum well infrared photodetectors (PV QWIP) using 2 ps pulses from a free electron laser. We measured rise and fall times of 8 ps and 63 ps, respectively. We have also determined the temperature dependence of the voltage responsivity and resistance of the sample from 70 K to 300 K. Based on these measurements, we discuss the figures of merit of PV QWIPs in a high-bandwidth 50 ohm environment.
Author(s)
Schneider, H.
Schönbein, C.
Bihlmann, G.
Fraunhofer-Institut für Angewandte Festkörperphysik IAF  
Son, P. van
Sigg, H.
Journal
Applied Physics Letters  
DOI
10.1063/1.118628
Language
English
Fraunhofer-Institut für Angewandte Festkörperphysik IAF  
Keyword(s)
  • GaAs/AlGaAs

  • photovoltaic

  • Photovoltaik

  • time-dependent photocurrent

  • zeitabhängiger Photostrom

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