A low-frequency torsion pendulum with interferometric readout

M. P. Ross*, K. Venkateswara, C. A. Hagedorn, C. J. Leupold, P. W.F. Forsyth, J. D. Wegner, E. A. Shaw, J. G. Lee, J. H. Gundlach

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    6 Citations (Scopus)


    We describe a torsion pendulum with a large mass-quadrupole moment and a resonant frequency of 2.8 mHz, whose angle is measured using a Michelson interferometer. The system achieved noise levels of ~200prad/Hz between 0.2 and 30 Hz and ~10prad/Hz above 100 Hz. Such a system can be applied to a broad range of fields from the study of rotational seismic motion and elastogravity signals to gravitational wave observation and tests of gravity.

    Original languageEnglish
    Article number054502
    JournalReview of Scientific Instruments
    Issue number5
    Publication statusPublished - 1 May 2021


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