Userfriendly and Compact Holographic Camera Based on Photorefractive Crystals. Applications in high Accuracy Metrology

We present recent developments achieved in order to make compact and easy to handle a photorefractive holographic camera. The technological interest of photorefractive crystals as holographic recording medium will be shortly recalled. The reported improvement concerns the reduction of the optical head to some basic components (objective lenses, crystal and CCD camera) by use of optical fibers for light transportation. The new compact holographic head can be handled easily and placed in any position rendering this device more flexible and adaptable to any kind of problem. In addition, it offers the main advantage to make easier the interfacing with any kind of laser. Some applications are presented and show the versatility of the instrument as well as the quality of the results.