Frequency stability of spatial mode interference (tilt) locking

B. J.J. Slagmolen*, D. A. Shaddock, M. B. Gray, D. E. McClelland

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    14 Citations (Scopus)

    Abstract

    This paper describes the investigation of the frequency stability of tilt locking, a technique which derives an error signal for locking a laser to an optical cavity by use of spatial-mode interference. By independently locking two lasers to the same optical cavity and measuring the beat frequency, a direct measurement of the stability of tilt locking was obtained. The beatnote exhibited a normal Allan deviation of 3.3 Hz over a time interval of 100 ms, yeilding a relative frequency stability of 1.3 × 10-14. This result implies at least a fractional locking stability of 1.3 × 10-14. Moreover, this stability was limited by fluctuations in the cavity spacer length and not the tilt-locking technique.

    Original languageEnglish
    Pages (from-to)1521-1528
    Number of pages8
    JournalIEEE Journal of Quantum Electronics
    Volume38
    Issue number11
    DOIs
    Publication statusPublished - Nov 2002

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