Optical characterization of BGO and BSO film for image recording

Silver halide photographic plates and photo-polymers have been utilized for the holographic recording. These materials are available only for recording of still pictures, and require complex developing process and relatively long time for recording and reproduction of the image. As an alterative, image recording using bismuth sillenite compound has been researched. The BGO and BSO single crystal bulk samples have been sued for these studies. On such background, we aimed to fabricate BGO and BSO films for image recording. Thin films have merits in device integration and mass production. We have already found out the process condition to obtain good crystalline BGO films on glass substrates. The film with crystalline phase only was obtained at the substrate temperatures above 200 degrees C. In this paper, BGO and BSO films were deposited on glass substrates and the ITO conducting films on the glass substrates using RF magnetron sputtering method. Preliminary image recording experiments were carried out for a BSO single crystal and its film. Image recording properties were characterized for the polycrystalline films with different film thickness by recording interference fringes using the Ar ion laser.