# Spectra analysis of Tm3$^+$ in K2YF5

Abstract : Emission and absorption spectra of Tm3+ in single crystal K2YF5 with different concentrations are reported and analyzed. The nonexponential feature of the fluorescence decay of D-1(2), level for the high concentration sample indicates the existence of a cross-relaxation process. Energy level simulation has been carried out by using a phenomenological model with 16 parameters accounting simultaneously for the free ion and crystal field (CF) effects. A good fit was achieved with a root mean square deviation sigma = 18 cm(-1). The free ion and CF effects were then discussed by comparing the available data of K2YF5:Nd3+, LiYF4:Tm3+ and LiYF4:Nd3+.
Document type :
Journal articles

http://hal.in2p3.fr/in2p3-00021798
Contributor : Suzanne Robert <>
Submitted on : Monday, July 12, 2004 - 2:50:53 PM
Last modification on : Wednesday, September 16, 2020 - 4:07:08 PM

### Identifiers

• HAL Id : in2p3-00021798, version 1

### Citation

Y. Li, M. Yin, N. Dong, V.N. Makhov, N.M. Khaidukov, et al.. Spectra analysis of Tm3$^+$ in K2YF5. Journal of Physics and Chemistry of Solids, Elsevier, 2004, 65, pp.1059-1063. ⟨in2p3-00021798⟩

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