G. Zhang, D. Kip, D. Nolte, J. Xu, eds., Trends in Optics and Photonics Series Vol 99 on Photorefractive Effects, Materials and Devices, Optical Society of America, pp. 661-668 (2005) Double-pulsed holographic interferometry with photorefractive crystals for vibration and shock analysis M. Georges, C. Thizy, P. Lemaire Centre Spatial de Liège-Université de Liège, Avenue du Pré-Aily, B-4031 Angleur-Liège, Belgium mgeorges@ulg.ac.be G. Pauliat, G. Roosen Laboratoire Charles Fabry, Unité Mixte de l'Institut d'Optique, du Centre National de la Recherche Scientifique et de l’Université Paris Sud, Bâtiment 503, 91403 Orsay Cedex, France I. Alexeenko, G. Pedrini Institut für Teknische Optik, Universität Stuttgart, Pfaffenwaldring 9, D-70569 Stuttgart, Germany S. Ryhon Optrion S.A., rue des Chasseurs Ardennais, B-4031 Angleur-Liège, Belgium N. Coates, R. Kelnberger Innolas, Somers Road, Rugby CV22 7DG, United Kingdom H. Schubach Dantec Ettemeyer, Kässbohrerstr.18, D-89077 Ulm, Germany N. Rümmler Amitronics, An der Hartmühle 10, D-82229, Seefeld b. München, Germany Abstract: We present the achievement of the european PHIFE project (Pulsed Holographic Interferometer for the analysis of Fast Events) concerning the development of holographic head principles connected to a YAG Q-switch double pulsed laser. Based on the results of a first laboratory development phase, a final prototype has been designed and built that incorporates both the laser and a modular holographic head. This device has been used in a variety of tests, mainly vibrations and shock analysis of solid objects proposed by industrial partners of the project. OCIS code : (120.2880) Instrumentation, measurement and metrology : holographic interferometry I. Introduction Holographic Interferometry (HI) [1,2] is a non-contact full-field non destructive technique that is used to measure Optical Path Differences arising from displacements/deformations of solid object or from refractive index changes in liquids or gases. It requires a laser beam that is divided in two parts : one will travel via the object (object beam), the other not (reference beam). Both beams are superimposed at the level of a recording medium where their interference (hologram) is recorded as local variations of the medium properties (refractive index, thickness or optical absorption). In our case, we use PhotoRefractive Crystals (PRCs) for recording holograms. Their interest is now well known since they are able to record hologram in situ, without any chemical or other assisted processing, contrarily to other types of recording media, such as holoplates or thermoplastics.