Two-photon-excited upconversion luminescence of Mn2+-doped germanate glass by infrared femtosecond laser irradiation

被引：0
作者：
Zhang, Yang [1 ,2 ,3 ]
Li, Pengfei [4 ]
Wang, Chengwei [1 ,2 ,3 ]
Bao, Zongjie [2 ,3 ]
Zhao, Quan-Zhong [2 ]
机构：
[1] Tongji Univ, Sch Phys Sci & Engn, Inst Precis Opt Engn, MOE Key Lab Adv Microstructured Mat, Shanghai 200092, Peoples R China
[2] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, State Key Lab High Field Laser Phys, Shanghai 201800, Peoples R China
[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[4] S China Univ Technol, Sch Mat Sci & Engn, Inst Opt Commun Mat, State Key Lab Luminescent Mat & Devices, Guangzhou 510640, Guangdong, Peoples R China
来源：
OPTICAL MATERIALS | 2014年 / 36卷 / 11期
基金：
中国国家自然科学基金;
关键词：
Upconversion; Simultaneously absorption; Mutltiphoton process; Photo-oxidation; Transition metal-doped materials; Ultrafast laser; LONG-LASTING PHOSPHORESCENCE; PHOTON AVALANCHE; QUANTUM COUNTERS; SOLID-STATE; WAVE-GUIDES; EXCITATION; IONS; PHOTOLUMINESCENCE; SPECTROSCOPY; CERAMICS;
D O I：
10.1016/j.optmat.2014.06.018
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We report on the upconversion luminescence of transition metal Mn ion S doped germanate glass exited by an infrared femtosecond laser at room temperature. The luminescent spectra exhibited that the upconversion luminescence originates from the Mn2+ ions. The dependence of the fluorescence intensity on the pump power reveals that a two-photon excitation process dominates in the conversion of infrared radiation to the visible emission. It is suggested that the simultaneous absorption of two infrared photons produces the population of upper excited states, which leads to the characteristic visible emission. Furthermore, we observed that the photo-oxidation of Mn2+ ions to Mn3+ ions by measuring the absorption spectra of the Mn ions doped germanate glass before and after femtosecond laser irradiation. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：1890 / 1893
页数：4
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