Fig. 9From: Ultrafast modulation of valley dynamics in multiple WS2 − Ag gratings strong coupling systemValley dynamics of WS2-spiral Ag grating. a, b Valley dynamics of WS2-spiral Ag grating device at 613 nm under the σ + (a) and σ- (b) excitation. c The dynamics of the circular polarization degree at 613 nm under σ + and σ- excitationBack to article page