According to the refractive index ellipsoid of uniaxial crystal, the relationship between diffraction efficiency of volume grating and polarization state of readout beam is theoretically analyzed.
根据单轴晶体的折射率椭球，从理论上分析了光折变体光栅的衍射效率与读出光偏振态的关系。
Based on the grating diffraction theory, the duty cycle and refractive index change of the periodically poled microstructure (PPMS) crystal are studied theoretically by light diffraction efficiency.
以光栅衍射理论为基础，从理论上分析研究了微结构晶体衍射效率与占空比和折射率的关系。
The results show that not only diffraction efficiency and SNR but also storage density and data rate can be increased by reducing the spot size on the crystal surface of the incident beams.
结果表明减小辐照在晶体上的光斑尺寸不仅能提高衍射效率和信噪比，而且可以提高存储密度和数据率。
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