Okamoto E, Ikeo H, Muto K
Appl Opt. 1975 Oct 1;14(10):2453-5. doi: 10.1364/AO.14.002453.
A single LiNbO(3) crystal doped with U ions is a new sensitive phase holographic material with high diffraction efficiency and with long thermal decay time of a hologram. The energy density of a 4880-A beam from an Ar-ion laser required to reach 40% diffraction efficiency is about 1 J/cm(2) for a 1.2-mm thick crystal. Diffraction efficiency of a hologram stored in an U-doped LiNbO(3) crystal was scarcely reduced from its initial value when the crystal was held at room temperature for 150 days.
掺杂铀离子的单块铌酸锂晶体是一种新型的敏感相位全息材料，具有高衍射效率和全息图的长热衰减时间。对于一块1.2毫米厚的晶体，来自氩离子激光器的4880埃光束要达到40%的衍射效率所需的能量密度约为1焦耳/平方厘米。当将掺杂铀的铌酸锂晶体在室温下保持150天时，存储在该晶体中的全息图的衍射效率几乎没有从其初始值降低。
