Topological Laser Cavities Could Revolutionize Optoelectronics

Photonic crystals and topological cavities are a new way to shape laser beamsPhoto: Kanté Group, UC San Diego

A new type of laser cavity that builds off a Nobel-winning development in physics can take on any shape and switch the flow of light with a magnetic field.

“Being able to do this kind of thing with light is a very exciting prospect,” says Boubacar Kante, a physicist at the University of California, San Diego. Kante and his colleagues describe their so-called topological...

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