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Researchers at the University of Colorado have created high-performance optical microresonators capable of efficiently capturing and amplifying light, reducing loss on a chip. The microresonators, shaped like 'race tracks', utilize smooth curves inspired by road construction to enhance light retention.

Fabricated with sub-nanometer precision using electron beam lithography, they incorporate chalcogenide glass, a transparent, non-linear semiconductor. Laser tests confirmed the devices' quality through deep, narrow resonance peaks. The technology aims to support applications in various fields, including compact microlasers and advanced sensors, with a focus on scalable industrial production.