[en] Photorefractive crystals offer many advantages over other classical holographic recording media. They allow fast in-situ processable holographic recording as well as indefinite reusability. Moreover high signal-to-noise ratio can be reached as well as high resolutions. We present several types of holographic instruments using such materials. Here we will emphasize their applications in vibration measurements. A first one is based on the classical stroboscopic technique, a second one uses a pulsed laser. We describe also the recent results obtained in the framework of the european project PHIFE (Pulsed Holographic Interferomete for the analysis of Fast Events), aiming at developing a full field measurement system of vibrations modes at high repetition rate.
Disciplines :
Physics
Author, co-author :
Georges, Marc ; Université de Liège - ULiège > CSL (Centre Spatial de Liège)
Thizy, Cédric ; Université de Liège - ULiège > CSL (Centre Spatial de Liège)
Lemaire, Philippe
Pauliat, Gilles
Roosen, Gérald
Alexeenko, Igor
Pedrini, Giancarlo
Ryhon, Sébastien
Coates, Nick
Kelnberger, Reinhard
Schnitzer, René
Rümmler, Norbert
Language :
English
Title :
Holographic interferometry with photorefractive crystals. Early experiments and results of the ongoing european project PHIFE