1　引言用于频域激光数据存储的光谱烧孔技术在小型存储器件领域具有很好的潜在应用前景。由于掺稀土的碱土金属硫化物是一种潜在的高效频域存储材料 ,我们详细研究了这种材料的光谱特性。对基于光存储应用的光谱烧孔来说 ,两种不同价态的 Eu离子 Eu2 +和 Eu3+作为掺杂物被引入 1 Introduction Spectral hole burning technique for frequency domain laser data storage has good potential applications in the field of small memory devices. Since rare earth-doped alkaline earth sulphides are a potentially efficient frequency domain storage material, we examined in detail the spectral properties of this material. For spectral burners based on optical storage applications, two different valences of Eu ions Eu2 + and Eu3 + are introduced as dopants