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. 2018 May 29;8:8238. doi: 10.1038/s41598-018-25906-7

Figure 3.

Figure 3

Momentum-resolved exciton dynamics. Momentum- and energy-resolved snapshots of exciton occupations for the most relevant 1 s, 1s-KΛ, 2p, 2 s, 3 s, 4 s and 5 s states for three characteristic times. The Λ-valley has been shifted in momentum for a better presentation. (a) Polarisation-to-population transfer during the pump pulse at t = 250 fs. (b) Intermediate exciton distribution at t = 400 fs. (c) Nearly relaxed Boltzmann-like exciton occupation at t = 2 ps.