High-speed infrared detection by uncooled photovoltaic quantum well infrared photodetectors
| Autor: | P. van Son, C. Schönbein, Hans Sigg, G. Bihlmann, Harald Schneider |
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| Přispěvatelé: | Publica |
| Jazyk: | angličtina |
| Rok vydání: | 1997 |
| Předmět: |
Physics
Physics and Astronomy (miscellaneous) business.industry Infrared zeitabhängiger Photostrom Photovoltaic system Free-electron laser Photodetector photovoltaic Responsivity Optics GaAs/AlGaAs Photovoltaik time-dependent photocurrent Figure of merit Optoelectronics Quantum well infrared photodetector business Quantum well |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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