Continuous THz emission from dipolaritons

Abstract

We propose a scheme of continuous tunable THz emission based on dipolaritons --- mixtures of strongly interacting cavity photons and direct excitons, where the latter are coupled to indirect excitons via tunnelling. We investigate the property of multistability under continuous wave (CW) pumping, and the stability of the solutions. We establish the conditions of parametric instability, giving rise to oscillations in density between the direct exciton and indirect modes under CW pumping. In this way we achieve continuous and tunable emission in the THz range in a compact single-crystal device. We show that the emission frequency can be tuned in a certain range by varying an applied electric field and pumping conditions. Finally, we demonstrate the dynamic switching between different phases in our system, allowing rapid control of THz radiation.

Main article 6 pages and 5 figures, two appendices 8 pages and 2 figures

References in corpus (5)

• Polarization multistability of cavity polaritons
• Control and ultrafast dynamics of a two-fluid polariton switch
• Stimulated emission of terahertz radiation by semiconductor microcavities
• Motion of spin polariton bullets in semiconductor microcavities
• Spin-orbit coupled cold exciton condensates

Cited by in corpus (16)

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• Nonlinear interactions of dipolar excitons and polaritons in MoS2 bilayers
• THz laser based on dipolaritons
• Ultrafast photocurrents in MoSe${}_2$ probed by terahertz spectroscopy
• Exciton effective mass enhancement in coupled quantum wells in electric and magnetic fields
• Controlled strong coupling and absence of dark polaritons in microcavities with double quantum wells
• Floquet control of dipolaritons in quantum wells
• Adiabatic preparation of a cold exciton condensate
• Terahertz emitters based on microcavity dipolaritons
• Semiconductor quantum well irradiated by a two-mode electromagnetic field as a terahertz emitter
• Terahertz cascades from nanoparticles
• On the possibility of a terahertz light emitting diode based on a dressed quantum well
• Magnetic control of dipolaritons in quantum dots