Simultaneous detection of ultraviolet and infrared radiation in a single GaN/GaAlN heterojunction.
Results are presented for a dual-band detector that simultaneously detects UV radiation in the 250-360 nm and IR radiation in the 5-14 microm regions with near zero spectral cross talk. In this detector having separate UV- and IR-active regions with three contacts (one common contact for both regions) allows the separation of the UV and IR generated photocurrent components, identifying the relative strength of each component. This will be an important development in UV-IR dual-band applications such as fire-flame detection, solar astronomy, and military sensing, eliminating the difficulties of employing several individual detectors with separate electronics-cooling mechanisms.
Jayasinghe
Ranga C
RC
Department of Physics and Astronomy, Georgia State University, Atlanta, Georgia 30303, USA.
Ariyawansa
Gamini
G
Dietz
Nikolaus
N
Perera
A G Unil
AG
Matsik
Steven G
SG
Yu
Hongbo B
HB
Ferguson
Ian T
IT
Bezinger
Andrew
A
Laframboise
Sylvain R
SR
Buchanan
Margaret
M
Liu
Hui Chun
HC