One-beam recording in a LiNbO₃ crystal

We propose a new way to record images in a photorefractive LiNbO ₃ crystal. This method involves only a single object light without any reference light. We believe that the recording is attained by fanning holograms that result from interference between the object light and its scattered light. Although volume gratings are involved, the recorded pattern can be viewed not only with a laser light beam that is incident over a certain angular range but also with white light.