| 摘要 |
In a first embodiment of the invention, a method and system of recording successive holograms in a recording medium is presented. The method utilizes a multilayer holographic storage media comprising a reflective substrate layer, a polarization shifting layer disposed above the reflective substrate layer, and a photorecording medium layer disposed above the polarization shifting layer. A reference beam and an encoded object beam are propagated at a first direction to a first area of the photorecording medium layer, where the reference beam and encoded object beam have a same first polarization and interfere to produce a first interference grating. The reference beam and the encoded object beam are reflected with the reflective substrate layer to produce a reflected reference beam and reflected encoded object beam incident the photorecording medium at a second direction, where the reference beam polarization and a encoded object beam polarization are altered with the polarization shifting layer so that the reflected reference beam and reflected encoded object beam have a same second polarization. The reflected reference beam and reflected encoded object beam interfere to produce a second interference grating, with the first polarization and second polarization being different. Successive holograms are recorded by translating the multilayer holographic storage media or reference and object beam along a shift multiplex direction, where the reference beam and object beam are propagated to successive areas of the photorecording medium.
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