Topological Laser Cavities Could Revolutionize Optoelectronics – IEEE Spectrum

https://spectrum.ieee.org/tech-talk/semiconductors/optoelectronics/topological-laser-cavities-could-revolutionize-optoelectronics

 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. Kante and his colleagues describe their so-called topological cavities in the current issue of Science.

 Normally, a laser cavity, where light amplification takes place, is shaped like a ring. In this case, the researchers made two types of photonic crystals that had different topologies. 




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