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Lasers

Lasers

Topological insulator design makes 30 lasers emit as one

04 Nov 2021 Isabelle Dumé
tiny lasers acting together as one topological vertical cavity laser arrays
Artistic rendition of a topological array of vertically emitting lasers. All 30 microlasers along a topological interface (blue) act as one, collectively emitting coherent laser light (red). (Courtesy : Pixelwg, Christian Kroneck)
An array of 30 vertical cavity surface emitting lasers (VCSELs) has been made to behave as a single

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Isabelle Dumé is a contributing editor to Physics World
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