Results from the multi-surface vibrometry system developed at by Engineering Photonics1,2 at Cranfield University were presented by Thomas Kissinger at the 12th International conference on laser vibration measurements held in Ancona, Italy.
Apart from the obvious benefits of good food, nice weather and historic surroundings, see Fig. 1, the long running Ancona laser vibrometry conference is the premier conference in the field. It is a suitable venue to present our work on multi-surface vibrometry, which allows displacement signals from multiple semi-reflecting surfaces along a single laser beam to be evaluated simultaneously. This new technique allowed the concurrent measurement of differential and common-mode vibrations of the cryostat (see Fig. 2) and could also be of use in other situations where differential displacement or vibration measurements are required.
- Kissinger, T. Charrett, S. W. James, A. Adams, A. Twin, and R. P. Tatam, “Characterisation of a cryostat using simultaneous, single-beam multiple-surface laser vibrometry”, AIP Conf. Proc. 1740, 100004 (2016).
- Kissinger, T. O.H. Charrett, and R. P. Tatam, “Range-resolved interferometric signal processing using sinusoidal optical frequency modulation”, Opt. Express 23(7), 9415-9431 (2015).