Zang Jinliang, Fan Fenflan, Liu Ying, Wei Ran, Tan Xiaodi
Opt Lett. 2019 Sep 1;44(17):4107-4110. doi: 10.1364/OL.44.004107.
We report on four-channel volume holographic recording with linear polarization-sensitive holography. This technique is based on the null reconstruction effect (NRE) of linear polarization-sensitive holography, which means the diffraction efficiency varies with polarization states of the reading wave. The dependency of holographic reconstruction on the polarization state of the reading wave is investigated based on the vector holography theory. The NRE of a polarization-sensitive hologram written by orthogonal and nonorthogonal linear waves is achieved at a cross-angle of π/2 inside the recording media. Based on the NRE of linear polarization-sensitive holography, a four-channel volume holographic recording is experimentally demonstrated with negligible cross talk noise. The presented four-channel holographic recording scheme is expected to improve holographic storage density by an additional channel.
我们报道了利用线性偏振敏感全息术进行的四通道体全息记录。该技术基于线性偏振敏感全息术的零重建效应（NRE），即衍射效率随读取波的偏振态而变化。基于矢量全息理论，研究了全息重建对读取波偏振态的依赖性。在记录介质内部π/2的交叉角处，由正交和非正交线性波写入的偏振敏感全息图实现了NRE。基于线性偏振敏感全息术的NRE，通过实验证明了一种四通道体全息记录，其串扰噪声可忽略不计。所提出的四通道全息记录方案有望通过增加一个通道来提高全息存储密度。
