Abstract
Optically addressable spatial light modulators (OASLM's) are not only of use for the introduction of an incoherent intensity distribution to a coherent optical system, but also to realize optical image processing and storage if the same coherent beam is used to write and to read out the OASLM. In our contribution we report investigations on several optical systems, where the information that was read out coherently from a OASLM is processed by an optical system and then fed back to the rear side of the OASLM. Similar systems have been described in the literature for example to compensate wavefront aberrations in adaptive optics [1], or as a Fabry-Perot type OASLM with internal feedback [2]. We want to demonstrate the image processing and storage capabilities of such systems and will show how both amplitude and phase of a beam can be used for the processing.