Hologram recording in cadmium and copper doped cadmium sulphide |
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| Authors: | S Kanev K Tsvetkova M Georgiev T Todorov V Seinov |
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| Institution: | Institute of Solid State Physics, Bulgarian Academy of Sciences, Sofia, Bulgaria;Central Laboratory of Optical Information Storage and Processing, Bulgarian Academy of Sciences, Sofia, Bulgaria |
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| Abstract: | Photoinduced changes in the optical absorption of large crystals of cadmium sulphide doped with cadmium and copper, are used to store Bragg-angle holograms by means of a He-Ne laser. The recordings are stable in the dark at room temperature and can be erased either optically or thermally. Diffraction efficiencies of over 1% at a write energy of about 1J/cm2 are obtained. |
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