Dynamical and Tuneable Modulation of the Tamm Plasmon/Exciton-Polariton Hybrid States Using Surface Acoustic Waves

In this work, we discuss theoretically the formation of the Tamm plasmon/exciton-polariton hybrid states in an (Al, Ga) As microcavity and their modulation by surface acoustic waves. The modulation of the Tamm plasmon/exciton-polariton states origins in the change of the excitonic band gap energy and the thickness change of the sample structure layers due to the induced strain fields by surface acoustic waves. The frequency f(SAW) of the acoustic modulation of the Tamm plasmon/exciton-polariton states is limited by the thickness of the upper distributed Bragg reflector. For the Tamm plasmon/exciton-polariton states in AlxGa1-xAs/GaAs structures f(SAW) is in the range of 370 MHz while f(SAW) in GHz range is possible for the parametric Tamm plasmon/exciton-polariton states. In both cases, the acoustic modulation is several meV for typical acoustic power levels.