Spatial light modulator device and wide dynamic conoscopic holography apparatus using the same

摘要

the invention relates to a device comprising a spatial light photo refractive crystal addressed by means of a light beam for writing (pa) and a reading light beam (fl).;the crystal (1) is placed in the cavity of an interferometric system (2) with a characteristic of high slope transmitivitu00e9 - optical path so as to induce a maximum variation of the transmitivitu00e9 dynamics for a minimum change of refractive index or ch the photo refractive crystal optical hazards.;application to devices for high dynamic conoscopique holography and pattern recognition in real time.