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Updated: Feb 2, 2026

Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies
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Unidirectional light emission in PT-symmetric microring lasers

Jinhan Ren, Yuzhou G N Liu, Midya Parto

    Optics Express
    |November 25, 2018
    PubMed
    Summary

    Researchers developed a unidirectional laser using parity-time symmetry and chiral S-bends. This design suppresses one light direction, enabling single-mode lasing in coupled resonators.

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