Frequency locking of an optical cavity using LQG integral control

Sayed Hassen, Sayed Zahiruddeen, Elanor Huntington, Matthew R. James, Ian Richard Petersen

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

    4 Citations (Scopus)

    Abstract

    This paper considers the application of LQG integral control theory to a problem of cavity locking in quantum optics. The cavity locking problem involves controlling the error between the laser frequency and the cavity frequency. A model for the cavity system, which comprises of a piezo-electric actuator and an optical cavity is determined in the frequency domain using a subspace identification method. An LQG controller which includes integral action is synthesized to stabilize the frequency of the cavity at the laser frequency and to reject low frequency noise inherent in laser systems. The controller is discretized and is successfully tested in thelaboratory after being implemented on a dSpace DSP board.

    Original languageEnglish
    Title of host publicationProceedings of the 17th World Congress, International Federation of Automatic Control, IFAC
    Edition1 PART 1
    DOIs
    Publication statusPublished - 2008
    Event17th World Congress, International Federation of Automatic Control, IFAC - Seoul, Korea, Republic of
    Duration: 6 Jul 200811 Jul 2008

    Publication series

    NameIFAC Proceedings Volumes (IFAC-PapersOnline)
    Number1 PART 1
    Volume17
    ISSN (Print)1474-6670

    Conference

    Conference17th World Congress, International Federation of Automatic Control, IFAC
    Country/TerritoryKorea, Republic of
    CitySeoul
    Period6/07/0811/07/08

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