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Exciton dynamics in WSe2 bilayers
G. Wang, X. Marie, L. Bouet +5
We investigate exciton dynamics in 2H-WSe2 bilayers in time-resolved photoluminescence (PL) spectroscopy. Fast PL emission times are recorded for both the direct exciton with $τ_{D…
Charge tuning in [111] grown GaAs droplet quantum dots
L. Bouet, M. Vidal, T. Mano +10
We demonstrate charge tuning in strain free GaAs/AlGaAs quantum dots (QDs) grown by droplet epitaxy on a GaAs(111)A substrate. Application of a bias voltage allows the controlled c…
Non-linear Optical Spectroscopy of Excited Exciton States for Efficient Valley Coherence Generation in WSe2 Monolayers
G. Wang, X. Marie, I. Gerber +6
Monolayers (MLs) of MoS2 and WSe2 are 2D semiconductors with strong, direct optical transitions that are governed by tightly Coulomb bound eletron-hole pairs (excitons). The optoel…
Exciton fine structure and spin decoherence in monolayers of transition metal dichalcogenides
M. M. Glazov, T. Amand, X. Marie +3
We study the neutral exciton energy spectrum fine structure and its spin dephasing in transition metal dichalcogenides such as MoS. The interaction of the mechanical exciton wi…
Valley dynamics probed through charged and neutral exciton emission in monolayer WSe2
G. Wang, L. Bouet, D. Lagarde +5
Optical interband transitions in monolayer transition metal dichalcogenides such as WSe2 and MoS2 are governed by chiral selection rules. This allows efficient optical initializati…