Answers are grounded in this paper and cite their sources.
We report the first experimental observation of resonant Brillouin scattering of excitonic polaritons in a semiconductor. The usual symmetric Brillouin doublet becomes an asymmetric multiplet when the incident light energy is scanned through the $n=1$ exciton resonance and allows a direct measurement of the polariton dispersion curve. In GaAs we determine a longitudinal-transverse splitting of 0.08 ±{} 0.02 meV and a translational mass Mₑₓ=(0.6±0.1)m₀ for the [100] heavy exciton. The excitions couple preferentially to LA phonons.
No takes yet. Share an insight, caveat, or question.
Ulbrich et al. (1977) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: