Desighn and Development of Infrared-to-Visible Upconversion Rare Earth Laser

红外-可见光上转换稀土激光器的设计与研制

• 批准号: 04453069
• 负责人: SOGA Naohiro
• 金额: $ 5.12万
• 依托单位: KYOTO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1992
• 资助国家: 日本
• 起止时间: 1992 至 1993
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-04453069/
• 关键词: Rare earth glass; upconversion; Frequency conversion laser; Energy transfer; Excited state absorption; Phonon sideband; Mossbauer effect; Ligand field; フオノンサイドバンド

We have obtained several research results listed below.It was possible for the first time to ovserve efficient visible upconverion in Er^<3+> doped heavy metal oxide glasses by 800nm radiation of infrared AlGaAs laser diode.The upconversion efficiency was found to vary with the phonon energy coupled with the rare earth ions in the host glass, which was observed in the phonon sideband spectra.The Tm^<3+> doped glasses exhibit uv and blue upconversion by 650nm pumping of DCM-dye laser. The main mechanism of Tm^<3+> upconversions was excited state absorption from two kinds of excited levels.Teh controlling factors of Judd-Ofelt intensity parameters were made clear for Er^<3+> and Nd^<3+> ions in oxide and several fluoride glasses. Among three OMEGA_t parameters, the OMEGA_6 showed a strong correlation between the ^<151>Eu isomer shift in Mossbauer effect measurement for the glass with the same composition. These phenomena could be well explained by the shielding effect on the 5dorbital by the 6s electron, the density of which is increased by the covalency effect of rare earth and ligand bond.

我们在以下几个方面取得了研究成果：首次实现了掺Er~(2+)、In~(3+)、Gt~(3+)掺杂重金属氧化物玻璃在800 nm红外AlGaAs激光二极管作用下的可见上转换。在声子边带光谱中观察到，掺Er~(2+)、In~(3+)、Gt~(2+)的重金属氧化物玻璃的上转换效率随声子能量的变化而变化。Tm^&lt；3+&gt；上转换的主要机制是两种激发能级的激发态吸收，明确了氧化物和几种氟化物玻璃中Er^&lt；3+&gt；和Nd^&lt；3+&gt；离子强度参数的控制因素。在三个omega_t参数中，对于相同组成的玻璃，在穆斯堡尔效应测量中，omega_6与^&lt；151和gt；Eu；Eu异构体位移之间有很强的相关性。这些现象可以通过6S电子对5dorbary的屏蔽效应得到很好的解释，6s电子的密度通过稀土与配位键的共价效应而增加。

项目成果

田部勢津久: "Excited state absorption mechanisms in red-laser-pumped uv and blue upconversions in Tm^<3+>-doped fluoroaluminate glass." Physical Review B. 47. 2507-2514 (1993)

Setsuhisa Tabe：“Tm^<3+> 掺杂氟铝酸盐玻璃中红激光泵浦紫外和蓝光上转换的激发态吸收机制。物理评论 B. 47. 2507-2514 (1993)

田部勢津久: "Compositional dependence of Judd-Ofelt parameters of Er^<3+> ions in alkali-metal borate glasses." Physical Review B. 46. 3305-3310 (1992)

Setsuhisa Tabe：“碱金属硼酸盐玻璃中 Er^3+ 离子的 Judd-Ofelt 参数的成分依赖性。物理评论 B. 46. 3305-3310 (1992)

田部 勢津久: "Upconversion and local structure of Er^<3+> doped aluminate glasses" 日本セラミックス協会学術論文誌. 101. 78-84 (1993)

Setsuhisa Tabe：“Er^3+掺杂铝酸盐玻璃的上转换和局部结构”日本陶瓷学会杂志101. 78-84 (1993)。

S.Tanabe: "Relation between the Omega-6 intensity parameter of Er^<3+> ions and Eu^<151>N isomer shift in oxide glasses" Journal of Applied Physics. 73. 8451-8454 (1993)

S.Tanabe：“氧化物玻璃中Er^<3>离子的Omega-6强度参数与Eu^<151>N异构体位移之间的关系”应用物理学杂志。

S.Tanabe: "Upconversion and local structure of Er^<3+> doped aluminate glasses." Journal of Ceramic Society of Japan. 101. 78-83 (1993)

S.Tanabe：“Er^<3> 掺杂铝酸盐玻璃的上转换和局部结构。”