Q. Du et al., NORMAL INCIDENCE INFRARED MODULATORS USING INTERSUBBAND TRANSITIONS IN INAS GASB/ALSB STEPPED QUANTUM-WELLS GROWN BY MOLECULAR-BEAM EPITAXY/, Journal of vacuum science & technology. B, Microelectronics and nanometer structures processing, measurement and phenomena, 14(3), 1996, pp. 2343-2345
Normal incidence infrared (3-5 mu m) modulators based on AlSb/InAs/Al0
.4Ga0.6Sb/GaSb/AlSb stepped quantum wells have been successfully grown
on (100) GaSb substrates by molecular beam epitaxy, X-ray diffraction
characterization showed sharp satellite peaks. The devices were fabri
cated and measured using a Fourier transform infrared spectrometer at
77 K. The largest normal incidence infrared absorption coefficient (al
pha) of 3200 cm(-1) at 5 mu m has been obtained at 14 V applied revers
e bias. (C) 1996 American Vacuum Society.