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Nanophotonics

Nanophotonics

Atomically thin lasers shine for the first time at room temperature

06 Dec 2021
Atomically thin laser
Room-temperature emission: The device comprises two distributed Bragg reflectors (DBRs) encapsulating a tungsten diselenide (WSe2) monolayer encapsulated with a hexagonal boron nitride (h-BN) layer. (Courtesy: CC BY 4.0/H Shan et al Nat. Commun. 10.1038/s41467-021-26715-9)
A two-dimensional semiconductor crystal just three atomic layers thick has emitted laser-like light.

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Martijn Boerkamp is a science journalist based in the Netherlands
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