Figure 3: Experimental and theoretical polariton dispersion relations in the studied Tamm structure.
From: Room-temperature Tamm-plasmon exciton-polaritons with a WSe2 monolayer

(a) Room-temperature false colour intensity profile of the full polariton dispersion relation extracted from the PL measurements. (b) Model of the full dispersion by assuming a Boltzmann distribution of the quasiparticles with an effective temperature of 300 K.