MyM′1-yFClxBr1-x:Sm2+的电子跃迁过程和光谱烧孔效率

通过测量无机光谱烧孔系列材料MyM′_1-yFCl_xBr_1-x:Sm²⁺（Ｍ＝Ｍｇ，Ｃａ，Ｓｒ，Ｂａ）中４ｆ５ｄ带的激发光谱随组分ｘ和ｙ的变化，⁵Ｄ_J—⁷Ｆ₀（Ｊ＝２，１，０）跃迁的荧光衰减随组分与温度的变化，对其烧孔的电子跃迁过程及其对烧孔效率的影响进行了研究．得出结论：在此系列材料中，随着Ｂｒ含量和小半径的碱土离子的增加，Ｓｍ

ELECTRON TRANSITION PROCESS OF MyM′1-yFClxBr1-x:Sm2+ AND SPECTRAL HOLE-BURNING EFFICIENCY

By measuring the excitation spectra of the 4f5d bands and the fluorescent decays of the ⁵Ｄ_J—⁷Ｆ₀（Ｊ＝２，１，０） transition probability depending on temperature in MyM′_1-yFCl_xBr_1-x:Sm²⁺(M=Mg,Ca,Sr,Ba)series, we have studied the dependence of the energy separation between the 4f5d bands and the ⁵Ｄ_J level, the ⁵Ｄ_J—⁷Ｆ₀（Ｊ＝２，１，０） transition probability on the composition grade(x) and (y) and the effect on hole-burning efficiency. We draw conclusions as below: In MyM′_1-yFCl_xBr_1-x:Sm²⁺ series, the 4f5d bands will be more close to the ⁵Ｄ_J level with the increase of the Br concentration and the concentration if snakk radium alkaline earth ion, and this situation makes the ⁵Ｄ_J—⁷Ｆ₀ electron transition probability increase. By reasoning, the hole-burning efficiency of Sm²⁺ are expected to by enhanced.