Bi_（12）SiO_（20）类晶体中全息图记录和读出的双施主模型

The Two-Donor Model of Recording and Reading of Holograms with Crystals Bi_(12)SiO_(20)-Type

用双施主模型对Ｂｉ１２ＳｉＯ２０（ＢＳＯ）类光致折射晶体中全息图记录和读出的Ｋｕｋｈｔａｒｅｖ单施主模型进行了修正。并用以讨论了全息图的衍射率，得到一个描述衍射率的普遍公式。

The Kukhturev single-donor model of recording and reading of holograms with photorefractivecrystuls Bi12SiO20-type is amended by the two-donor model. The diffraction efficiency of hologram is discussed by using this two- donor model. A generalized formula for describing diffraction efficiency has been obtained.