Suspensions with reduced violin string modes

B.H. Lee, Li Ju, David Blair, N Mio (Editor)

    Research output: Contribution to journalArticlepeer-review

    1 Citation (Scopus)


    We discuss the possibility of significantly reducing the number and Q-factor of violin string modes in the mirror suspension. Simulations of a bar-flexure suspension and an orthogonal ribbon have shown a reduction in the number of violin string modes when compared to a normal ribbon suspension. By calculating the expected suspension thermal noise, we find that the orthogonal ribbon provides a promising suspension alternative. A lower number of violin modes oscillating in the direction of the laser and a reduction in violin mode peak values of at least 23dB can be achieved with a slight increase in thermal noise above 40Hz.
    Original languageEnglish
    Pages (from-to)353-361
    JournalJournal of Physics: Conference Series
    Publication statusPublished - 2006


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