This is the final report for a 1-year project funded by the European Office of Research and Development (EOARD). In this work GaN/AlGaN strain-balanced heterostructures have been designed for near-infrared absorption through intersubband transitions. By making use of existing collaborations with workers at the University of Sheffield and UMIST the semiconductor samples have been grown, characte...

The intrasubband and intersubband absorption of light by free charge carriers in a semiconductor nanowire upon scattering polar optical phonons mediated Rashba Dresselhaus spin-orbit interactions has been studied. dependence the coefficient on energy incident photon is investigated counting transitions between different conduction subbands. It shown that interaction leads to an increase light, ...

We propose and analyze an efficient scheme for suppressing the absorption of a weak probe field based on intersubband transitions in a four-level asymmetric coupled quantum well (CQW) driven coherently by a probe laser field and a control laser field. We study the steady-state process analytically and numerically, and our results show that the probe absorption can be completely eliminated under...