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推导了光聚物全息存储布拉格偏移与记录角度的关系公式,数值计算的结果与实验符合很好。结果表明,光聚物全息存储的布拉格偏移与记录角度有比较大的关系,对于倾斜光栅,记录过程中参物光夹角越小,布拉格偏移越大。该结果对光聚物高密度全息存储器光路的设计有参考意义。
The relationship between the Bragg offset and the recording angle of photopolymer holographic storage is deduced. The numerical results are in good agreement with the experiment. The results show that the Bragg offset of holographic memory for photopolymer has a relatively large relationship with the recording angle. For oblique gratings, the smaller the included angle of the parabolic wave is, the larger the Bragg offset is. The result has reference significance for the design of optical path of high density holographic memory.