Lh. Peng et Cg. Fonstad, MULTIBAND COUPLING EFFECTS ON ELECTRON QUANTUM-WELL INTERSUBBAND TRANSITIONS - REPLY, Journal of applied physics, 80(1), 1996, pp. 603-605
It is shown that the 14 band k . p analysis of TE (x,y)-polarized quan
tum well intersubband transitions can be categorized as (i) second ord
er (bulk limit), and (ii) first order (quantum limit) perturbation dep
ending on the structures. In the quantum limit, TE-active intersubband
transition prevails. This explains the recent reports of normal incid
ent quantum well photodetectors made of InGaAs/GaAs, InGaAs/AlGaAs, an
d GaAs/AlGaAs. (C) 1996 American Institute of Physics.