TY - JOUR

T1 - Diffusive propagation of exciton-polaritons through thin crystal slabs

AU - Zaitsev, D.A.

AU - Il'Ynskaya, N.D.

AU - Koudinov, A.V.

AU - Poletaev, N.K.

AU - Nikitina, E.V.

AU - Egorov, A.Yu.

AU - Kavokin, A.V.

AU - Seisyan, R.P.

PY - 2015

Y1 - 2015

N2 - If light beam propagates through matter containing point impurity centers, the amount of energy absorbed by the media is expected to be either independent of the impurity concentration N or proportional to N, corresponding to the intrinsic absorption or impurity absorption, respectively. Comparative studies of the resonant transmission of light in the vicinity of exciton resonances measured for 15 few-micron GaAs crystal slabs with different values of N, reveal a surprising tendency. While N spans almost five decimal orders of magnitude, the normalized spectrally- integrated absorption of light scales with the impurity concentration as N1/6. We show analytically that this dependence is a signature of the diffusive mechanism of propagation of exciton-polaritons in a semiconductor.

AB - If light beam propagates through matter containing point impurity centers, the amount of energy absorbed by the media is expected to be either independent of the impurity concentration N or proportional to N, corresponding to the intrinsic absorption or impurity absorption, respectively. Comparative studies of the resonant transmission of light in the vicinity of exciton resonances measured for 15 few-micron GaAs crystal slabs with different values of N, reveal a surprising tendency. While N spans almost five decimal orders of magnitude, the normalized spectrally- integrated absorption of light scales with the impurity concentration as N1/6. We show analytically that this dependence is a signature of the diffusive mechanism of propagation of exciton-polaritons in a semiconductor.

U2 - 10.1038/srep11474

DO - 10.1038/srep11474

M3 - Article

VL - 5

SP - 11474

JO - Scientific Reports

JF - Scientific Reports

SN - 2045-2322

ER -