Optical recording method and apparatus utilizing polymeric birefringent materials

摘要: An optical recording media as well methods and apparatus for reading writing on the novel are provided. The has property of birefringence, information is stored thereon by modifying birefringence storage at selected locations leaving intact other locations. Alternatively, inducing onto only may be either in a binary format, or multi-level (or analog) format. In birefringent material wherein formed stretching, pulse from focused laser utilized to modify application thermal energy. recorded read passing polarized light through ascertaining whether was modulated it passed various It possible with same used decreasing power during step. described rendering incapable further information.