Year-end Sale % OFF 
Abstract
We have theoretically investigated the optical absorption spectrumand intraband dynamics by subjecting a superlattice to both aterahertz (THz)-frequency driving field and an optical pulse byusing an excitonic basis. In the presence of a THz dc field, thesatellite structures in the absorption spectra are presented. Thesatellite structure is a result from the THz nonlinear dynamics ofWannier–Stark ladder excitons. On the other hand, the coherentintraband polarization is investigated. We find that the excitonicBloch oscillation is driven by the THz field and yields an intrabandpolarization that continues to oscillate at times much longer thanthe intraband dephasing time. The temporal evolution of the slowlyvarying components of the intraband polarization is dependent onthe THz frequency.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
