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报道了用两种照明方法在LiNbO3 ∶Cu∶Ce晶体中实现非挥发全息存储,一种是用紫外光敏化和红光同时记录的方法,另一种是用氩离子的 45 8nm蓝光敏化和红光同时记录的方法。结果表明第二种方法可以获得更高的光固定(非挥发)衍射效率和光固定效率,但引起弱光致散射。优化的蓝光光强为 70 0W m2 左右时,获得最大光固定折射率变化为 5× 10 - 5。
Reported the use of two illumination methods to achieve non-volatile holographic storage in LiNbO3: Cu: Ce crystals, one with simultaneous UV-light and red light recording and the other with 458 nm blue light with argon ions and Red light while recording method. The results show that the second method can obtain higher light fixed (non-volatile) diffraction efficiency and light fixation efficiency, but cause weak light scattering. When the optimized blue light intensity is about 70 0 W m2, the maximum optical fixed refractive index change is 5 × 10 - 5.