Abstract
We have investigated the photoluminescence (PL) dynamics of microcavity polaritons for non-resonant, low-power excitation as a function of the photon–exciton detuning on a picosecond time scale at 9 K. For negative detuning, we give clear experimental evidence for the appearance of a slow-down of the relaxation processes inhibiting total thermalisation of the polariton population. This can be well explained by the inefficiency of the coupling between acoustic phonons and photon-like polaritons. Furthermore, we will discuss separately both the influence of the effective oscillator strength and of the dark excitonic states on the PL dynamics by varying the number of quantum wells.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.