Absolute measurement of small-amplitude vibrations by time-averaged heterodyne holography with a dual local oscillator - Archive ouverte HAL Access content directly
Journal Articles Optics Letters Year : 2013

Absolute measurement of small-amplitude vibrations by time-averaged heterodyne holography with a dual local oscillator

Abstract

We report a demonstration of the measurement of the ratio between an optical modulation side band component and the non-shifted light component by time-averaged heterodyne holography in off-axis and frequency-shifting configuration, through coherent frequency-division multiplexing with a dual optical local oscillator. Experimental results of sinusoidal vibration sensing are reported. This technique enables absolute measurements of sub-nanometric out-of-plane vibration amplitudes.
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Dates and versions

hal-00756069 , version 1 (22-11-2012)

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Nicolas Verrier, Michael Atlan. Absolute measurement of small-amplitude vibrations by time-averaged heterodyne holography with a dual local oscillator. Optics Letters, 2013, 38 (5), pp.739. ⟨hal-00756069⟩
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