Control and tuning of a suspended Fabry-Perot cavity using digitally enhanced heterodyne interferometry

John Miller*, Silvie Ngo, Adam J. Mullavey, Bram J.J. Slagmolen, Daniel A. Shaddock, David E. McClelland

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    6 Citations (Scopus)

    Abstract

    We present the first demonstration of real-time closed-loop control and deterministic tuning of an independently suspended Fabry-Perot optical cavity using digitally enhanced heterodyne interferometry, realizing a peak sensitivity of ∼10 pm/√ Hz over the 10-1000 Hz frequency band. The methods presented are readily extensible to multiple coupled cavities. As such, we anticipate that refinements of this technique may find application in future interferometric gravitational-wave detectors.

    Original languageEnglish
    Pages (from-to)4952-4954
    Number of pages3
    JournalOptics Letters
    Volume37
    Issue number23
    DOIs
    Publication statusPublished - 1 Dec 2012

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