The possibility to record a dynamic hologram allows the design of a new generation of optical sensors insensitive to the surface state of the inspected target. The response time of the holographic media governs the performances with a range going from sub-nanometer displacements for ultrasonic vibrations to millimeter displacements for acoustic vibrations. We present a new generation of optical vibration sensors that uses dynamic holography in photorefractive materials to detect sub-nanometer to millimeter transient displacements of rough surfaces.
Sub-nanometer to millimeter vibration detection by dynamic holography
The 15th Annual Meeting of the IEEE Lasers and Electro-Optics Society ; 2 ; 594-595 vol.2
2002-01-01
118212 byte
Conference paper
Electronic Resource
English
WDD1 Sub-Nanometer to Millimeter Vibration Detection by Dynamic Holography
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