Local tuning of photonic crystal cavities using chalcogenide glasses

Andrei Faraon*, Dirk Englund, Douglas Bulla, Barry Luther-Davies, Benjamin J. Eggleton, Nick Stoltz, Pierre Petroff, Jelena Vučković

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    94 Citations (Scopus)


    We demonstrate a method to locally change the refractive index in planar optical devices by photodarkening of a thin chalcogenide glass layer deposited on top of the device. The method is used to tune the resonance of GaAs-based photonic crystal cavities by up to 3 nm at 940 nm. The method has broad applications for postproduction tuning of photonic devices.

    Original languageEnglish
    Article number043123
    JournalApplied Physics Letters
    Issue number4
    Publication statusPublished - 2008


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