HIGH-SPEED INFRARED DETECTION BY UNCOOLED PHOTOVOLTAIC QUANTUM-WELL INFRARED PHOTODETECTORS

Authors
SCHNEIDER H SCHONBEIN C BIHLMANN G VANSON P SIGG H
Citation
H. Schneider et al., HIGH-SPEED INFRARED DETECTION BY UNCOOLED PHOTOVOLTAIC QUANTUM-WELL INFRARED PHOTODETECTORS, Applied physics letters, 70(12), 1997, pp. 1602-1604
Citations number
10
Categorie Soggetti
Physics, Applied
Journal title
Applied physics letters → ACNP
ISSN journal
00036951
Volume
70
Issue
12
Year of publication
1997
Pages
1602 - 1604
Database
ISI
SICI code
0003-6951(1997)70:12<1602:HIDBUP>2.0.ZU;2-P
Abstract
We have investigated the temporal response of uncooled photovoltaic qu antum well infrared photodetectors (PV QWIP) using 2 ps pulses from a free electron laser. We measured rise and fall times of s 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 mu environment. (C) 1997 American Instit ute of Physics.