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Proceedings Paper

Dynamic population of infrared radiation in dysprosium-doped different host materials
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Paper Abstract

The dynamic population processes of infrared radiation in dysprosium-doped different host materials (LaF3, Y2O3, YAlO3 and silicate glass) are theoretically investigated. The radiation and non-radiation transition rates of each energy level are calculated using Judd-Ofelt (J-O) theory and according to “energy-gap law”. It is demonstrated that the non-radiative transition rate increases significantly as the phonon energy increases, indicating that the choice of host materials has a great influence on the infrared transition processes. By solving the rate equations we establish, it is found that the population profiles of the same energy levels are almost the same, but the time to reach equilibrium population varies greatly among different materials. The population probability of 6H9/2 and 6H11/2 energy levels increases first and then decreases, whereas that of 6H13/2 and 6H15/2 monotonically increases or decreases with time. The excited state 6H13/2 has a quite long decay lifetime of 38.97 ms in dysprosium-doped LaF3, which is a good metastable state for mid-infrared emission.. These results are helpful to the material selection and application of infrared lasers.

Paper Details

Date Published: 18 December 2019
PDF: 9 pages
Proc. SPIE 11337, AOPC 2019: Optical Spectroscopy and Imaging, 113371B (18 December 2019); doi: 10.1117/12.2547984
Show Author Affiliations
Xingyong Huang, Southwest Institute of Technical Physics (China)
Yibin Univ. (China)
Bizhou Shen, Dipont Education Management Group (China)
Xiumin Xie, Southwest Institute of Technical Physics (China)
Qiang Xu, Southwest Institute of Technical Physics (China)
Hai-Zhi Song, Southwest Institute of Technical Physics (China)
Univ. of Electronic Science and Technology of China (China)


Published in SPIE Proceedings Vol. 11337:
AOPC 2019: Optical Spectroscopy and Imaging
Jin Yu; Zhe Wang; Vincenzo Palleschi; Mengxia Xie; Yuegang Fu, Editor(s)

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