Control of Emission Spectrum in Rare-Earth-Doped Glasses by Light Irradiation

光照射控制稀土掺杂玻璃的发射光谱

• 批准号: 06805005
• 负责人: KAMATA Norihiko
• 金额: $ 1.15万
• 依托单位: Saitama University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-06805005/
• 关键词: Rare-Earth Ions; Fluorescent Glasses; Resonant-Energy Transfer; Phosphor; Concentration Quenching

Photoluminescence (PL) spectroscopy of Tb^<3+>-doped fluorescent glasses was carried out under two-wavelength excitation condition, aiming at a change in their emission on spectra. Both experimental and theoretical results were summarized as follows :1.The lifetime of ^5D_4 level of Tb^<3+>, which should be free from the influence of the resonant-energy transfer at high ionic concentration region, was measured by selective excitation of either ^5D_3 or ^5D_4.2.Each parameter in the nonlinear rate-equations of the resonant-enerygy transfer was determined self-consistently by using the experimental data.3.The realization of controlling the emission spectrum by the IR light, which is resonant to the energy difference between ^5D_3 and ^5D_4 (lambda=1.6mum), depends principally on the excitation density of the resonant IR light.4.When the ^5D_3 (CW) excitation was added to that the ^5D_4 (pulsed), we have observed a change in the time-decay characteristics of the ^5D_3-^7F_5 emission for the first time. The change corresponds to the dynamic interaction between two excitations and is thought to be quite interesting as a point of view of controlling emission spectrum.

在双波长激发条件下对Tb^3+掺杂荧光玻璃进行了光致发光(PL)光谱分析，旨在观察其发射光谱的变化。实验和理论结果总结如下：1.通过^5D_3或^5D_4的选择性激发测量了Tb^<3+>在高离子浓度区域不受共振能量转移影响的^5D_4能级的寿命。2.利用实验结果自洽地确定了共振能量转移非线性速率方程中的每个参数。 3.红外光控制发射光谱的实现，与^5D_3和^5D_4之间的能量差（lambda=1.6mum）共振，主要取决于共振红外光的激发密度。4.当^5D_3（CW）激发添加到^5D_4（脉冲）时，我们观察到了IR光的时间衰减特性的变化。 ^5D_3-^7F_5 首次发射。这种变化对应于两种激发之间的动态相互作用，并且从控制发射光谱的角度来看被认为是非常有趣的。

项目成果

鎌田憲彦,早川知克,山田興治: "希土類添加ガラスの発光と共鳴エネルギー移動" 応用物理. 65. 70-73 (1996)

Norihiko Kamata、Tomokatsu Hayakawa、Koji Yamada：“稀土掺杂玻璃中的光发射和共振能量转移”应用物理 65. 70-73 (1996)。

Hayakawa T., Sutoh N., Kamata N., Yamada K.: "Light Emission Characteristics of Tb^<3+>-Doped Glasses under Selective Excitation (in Japanese)" Laser and Quantum Electronics Res.Soc., IEICE. LQE94-63. 13-18 (1994)

Hayakawa T.、Sutoh N.、Kamata N.、Yamada K.：“选择性激发下 Tb^<3>-掺杂玻璃的光发射特性（日语）”激光和量子电子研究学会，IEICE。

早川知克,須藤則昭,鎌田憲彦,山田興治: "Tb^<3+>添加蛍光ガラスの選択励起可視発光特性" 電子情報通信学会レーザ・量子エレクトロニクス研究会. LQE94-63. 13-18 (1994)

Tomokatsu Hayakawa、Noriaki Sudo、Norihiko Kamata、Koji Yamada：“Tb^<3+>掺杂荧光玻璃的选择性激发可见光发射特性”IEICE激光和量子电子学研究组（1994）。

T. Hayakawa, N. Kamata and K. Yamada: "Visible Emission Characteristics in Tb^<3+>-Doped Fluorescent Glasses under Selective Excitation" J. Luminescence. (to be published). (1996)

T. Hayakawa、N. Kamata 和 K. Yamada：“选择性激发下 Tb^3> 掺杂荧光玻璃的可见发射特性”J. Luminescent。

早川、勝間田、小池、鎌田、山田: "Tb^<3+>添加ガラスの2波長励起時分解フォトルミネッセンス" 応用物理学会関係連合後援会 26a-ZP-11. (発表予定). (1996)

Hayakawa、Katsumada、Koike、Kamata、Yamada：“Tb^<3+> 掺杂玻璃的双波长激发分辨光致发光”日本应用物理学会赞助 26a-ZP-11（演示文稿预定）。 1996）