Preparation of Room Temperature Persistent Spectral Hole Burning Glasses

室温持久光谱烧孔玻璃的制备

• 批准号: 09650734
• 负责人: NOGAMI Masayuki
• 金额: $ 1.66万
• 依托单位: Nagoya Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09650734/
• 关键词: spectral hole burning; glass; rare-earth; memory; sol-gel

Persistent spectral hole burning (PSHB) phenomenon of Eu^<3+> and Sm^<2+> ions is one of the most significant optical properties for use in high-density frequency-domain optical data memory. For practical use, high temperature PSHB and stable hole are required. As a host material, glasses are thought to be more favorable than crystals, because of their wide inhomogeneous width, compositional variety and easy mass production. We focused on the preparation of high temperature PSHB glasses using a sol-gel method and succeeded in preparing aluminosilicate glasses doped with Sm^<2+> and Eu^<3+> ions exhibiting PSHB up to 300 and 210 K, respectively. The conclusions of our research are summarized as follows ;(1) Sm^<2+> and Eu^<3+>-doped silica and aluminosilicate glasses were prepared by heating the gels synthesized from metal alkoxides and nitrates of rare-earth.(2) PSHB was observed on the excitation spectra of the ^7F_0*^5D_0transition of the Eu^<3+> and Sm^<2+> ions. The hole depth proportionally increased as the content of hydroxyl bonds increased.(3) PSHB was formed by both the photo-induced rearrangement of the OH bonds and the photoionization of Sm^<2+> ions, and the holes burned by the rearrangement of the OH bonds surrounding the Sm^<2+> and Eu^<3+> ions and the holes burned by the rearrangement of the OH bonds were thermally refilled

Eu^3+和Sm^2+离子的持续光谱烧孔（PSHB）现象是用于高密度频域光数据存储的最重要的光学性质之一。为了实际使用，需要高温PSHB和稳定的孔。作为基质材料，玻璃被认为比晶体更有利，因为它们具有宽的不均匀宽度、成分多样性和易于大规模生产。我们采用溶胶-凝胶法制备了高温PSHB玻璃，并成功地制备了Sm^2+和Eu^3+掺杂的铝硅酸盐玻璃，其PSHB温度分别达到300 K和210 K。主要研究结果如下：（1）采用稀土金属醇盐和硝酸盐合成凝胶，通过加热制备了Sm^<2+>和Eu^<3+>掺杂的硅铝玻璃。(2)在Eu^<3+>和Sm^<2+>离子的^7F_0*^5D_0跃迁的激发光谱上观察到PSHB。随着羟基键含量的增加，空穴深度成比例地增加。(3)PSHB是由Sm ^<2+>离子的光致OH键重排和光致电离共同作用形成的，Sm^<2+>和Eu^<3+>离子周围的OH键重排烧蚀的空穴和OH键重排烧蚀的空穴被热填充

项目成果

T.Hayakawa, S.Tamil-Selvan, and M.Nogami: "Field enhancement effect of small Ag particles on the fluorescence from Eu^<3+>-doped SiO_2 glass" Appl.Phys.Lett.74 (March issue). (1999)

T.Hayakawa、S.Tamil-Selvan 和 M.Nogami：“小 Ag 颗粒对 Eu^<3> 掺杂 SiO_2 玻璃荧光的场增强效应”Appl.Phys.Lett.74（三月号）。

D.H.Cho, K.Hirao, N.Soga, M.Nogami: "Photochemical hole burning in Sm^<2+>-doped aluminosilicate and borosilocate glasses" J.Non-cryst.Solids. 215. 192-200 (1997)

D.H.Cho、K.Hirao、N.Soga、M.Nogami：“Sm^2 掺杂的铝硅酸盐和硼硅酸盐玻璃中的光化学烧孔”J.Non-cryst.Solids。

野上正行: "Fluorescence spectroscopy of silicate glasses doped with Sm^<2+> and Al^<3+> ions" J.Appl.Phys.81. 6351-6356 (1997)

Masayuki Nogami：“掺杂Sm 2+ 和Al 3+ 离子的硅酸盐玻璃的荧光光谱”J.Appl.Phys.81 (1997)。

野上正行: "Fluorescence properties of Eu^<3+> and Eu^<2+> codoped in aluminosilicate glass" J.Lumin.78. 63-68 (1998)

Masayuki Nogami：“铝硅酸盐玻璃中共掺杂的Eu^<3+>和Eu^<2+>的荧光特性”J.Lumin.78(1998)。

野上正行: "Persistent spectral hole burning and water content in Eu^<3+>-doped aluminosilicate glass" J.Phys : Condensed Matter. 11. 335-343 (1999)

Masayuki Nogami：“Eu^3+-掺杂铝硅酸盐玻璃中的持久光谱空穴燃烧和水含量”J.Phys：Condensed Matter。11. 335-343 (1999)