On-chip Brillouin lasers based on 10 million-Q chalcogenide resonators without direct etch process

Sangyoon Han, Dae Gon Kim, Joonhyuk Hwang, In Hwan Do, Dongin Jeong, Yong Hee Lee, Duk Yong Choi, Hansuek Lee*

*Corresponding author for this work

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    1 Citation (Scopus)

    Abstract

    We present a new device platform which defines on-chip chalcogenide waveguide/resonators without directly etching chalcogenide. Using our platform, we have demonstrated chalcogenide ring resonators with record high Q-factor exceeding 1.1x107 which is 10 times larger than previous record on on-chip chalcogenide resonators. A ring cavity is designed and fabricated for Stimulated Brillouin lasing on our platform. Thanks to the high-Q factor, Brillouin lasing with threshold power of 1 mW is demonstrated. This value is more than an order of magnitude improvement than previous world record for on-chip chalcogenide Brillouin lasers. We also developed an efficient and flexible method for resonator waveguide coupling with our device platform. Coupling between a resonator and a waveguide can be varied from under coupled region to over-coupled region.

    Original languageEnglish
    Title of host publicationLaser Resonators, Microresonators, and Beam Control XXII
    EditorsAlexis V. Kudryashov, Alan H. Paxton, Vladimir S. Ilchenko, Andrea M. Armani
    PublisherSPIE
    ISBN (Electronic)9781510632950
    DOIs
    Publication statusPublished - 2020
    EventLaser Resonators, Microresonators, and Beam Control XXII 2020 - San Francisco, United States
    Duration: 3 Feb 20206 Feb 2020

    Publication series

    NameProceedings of SPIE - The International Society for Optical Engineering
    Volume11266
    ISSN (Print)0277-786X
    ISSN (Electronic)1996-756X

    Conference

    ConferenceLaser Resonators, Microresonators, and Beam Control XXII 2020
    Country/TerritoryUnited States
    CitySan Francisco
    Period3/02/206/02/20

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