Holographic vibrometry: Full field holographic vibrometry at ultimate limits

Nicolas Verrier (1) , Michael Atlan (2) , Michel Gross (3)

1 LHC - Laboratoire Hubert Curien
2 IL - Institut Langevin - Ondes et Images (UMR7587)
3 L2C - Laboratoire Charles Coulomb

Heterodyne holography is an extremely versatile and powerful holographic technique that is able to fully control the amplitude, phase and frequency of both the illumination and holographic reference beams. Applied to vibration analysis, this technique is able to detect the signal of the carrier or the one of any vibration sideband. A complete analysis of the vibration signal can thus be made, and 2D map of the vibration amplitude and phase in all points of the surface of the vibrating object can be obtained. Since the sensitivity is limited by shot noise, extremely low vibration amplitude (< 0.01 nm) can be studied.

Domaines: Optique [physics.optics]

Nicolas Verrier, Michael Atlan, Michel Gross. Holographic vibrometry: Full field holographic vibrometry at ultimate limits. Pascal Picart. New techniques in Digital Holography, John Wiley & Sons, Inc.,, Chapter 7, 2015, Instrumentation and measurement series, ⟨10.1002/9781119091745⟩. ⟨hal-01144722⟩