Fano signatures between intersubband and ponderomotive responses in MQW structures.

摘要: We present an in-depth theoretical and numerical discussion on the Fano signatures observed in differential transmission spectra obtained from multiquantum well structures. These stem ponderomotive intersubband polarization currents modified by coupling between optical responses of different layers. A detailed this process is provided, evaluating quantitatively amplitude shape their dependence structural parameters, such as carrier concentration layer width. The model described here aims to predict weight contributions relation ones. In order include effect entire structure spectra, response each addressed within density matrix formalism encompassed transfer matrix. This method also ensures correct inclusion phase sensitive superposition layers which are based. Numerical simulations presented approach excellent agreement with behavior previous experiments.