Forget graphene, 2D laser uses tungsten disulphide

Forget graphene, 2D laser uses tungsten disulphide

Berkeley Lab scientists have turned to two-dimensional tungsten disulphide to make a disc resonator based laser. WS2 is a transition metal dichalcogenides (TMDC), which have a natural bandgap making them more suited to photon-electron interaction – more so than graphene which has no bandgap. TMDC bandgaps are indirect in the bulk material, and direct in ...

steve bush

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