An exciton-polariton bolometer for terahertz radiation detection
Paschos, G. G.
Liew, Timothy Chi Hin
Kavokin, A. V.
Savvidis, P. G.
Date of Issue2018
School of Physical and Mathematical Sciences
We experimentally investigate the feasibility of a bolometric device based on exciton-polaritons. Initial measurements presented in this work show that heating – via thermal expansion and bandgap renormalization – modifies the exciton-polariton propagation wavevector making exciton-polaritons propagation remarkably sensitive to thermal variations. By theoretical simulations we predict that using a single layer graphene absorbing layer, a THz bolometric sensor can be realized by a simple exciton-polariton ring interferometer device. The predicted sensitivity is comparable to presently existing THz bolometric devices with the convenience of being a device that inherently produces an optical signal output.
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