About the cover

September 2015 Volume 14 No 9

Intraband optical spectroscopy — which uses an ultrashort mid-infrared probe pulse and a visible pump pulse — can image the bright and dark exciton dynamics simultaneously in a transition metal dichalcogenide monolayer.

Letter p889; News & Views p860

IMAGE: BRAD BAXLEY

COVER DESIGN: DAVID SHAND

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