All-optical control of excitons in semiconductor quantum wells

Applying the Floquet theory, we developed the method to control excitonic properties of semiconductor quantum wells (QWs) by a high-frequency electromagnetic field. It is demonstrated, particularly, that the field induces the blue shift of exciton emission from the QWs and narrows width of the corresponding spectral line. As a consequence, the field strongly modifies optical properties of the QWs and, therefore, can be used to tune characteristics of the optoelectronic devices based on them.

Automated summary

Using the Floquet theory, this study developed a method to control the excitonic properties of semiconductor quantum wells through a high-frequency electromagnetic field. It was found that the field induced a blue shift in the exciton emission and narrowed the corresponding spectral line width. This finding has important implications for tuning the characteristics of optoelectronic devices based on quantum wells.