NDLI: Upconversion in Ho3+-doped YbF3 particle prepared by coprecipitation method

Content Provider	Springer Nature Link
Author	Yang, X. Xiao, S. Ding, J. W. Bu, Y. Wang, X.
Copyright Year	2008
Abstract	YbF3 particles doped with Ho3+ were synthesized by coprecipitation method, from which the ultraviolet and visible emission bands of the Ho3+ and the 480 nm cooperative upconversion emission of Yb3+–Yb3+ are observed under 980 nm excitation. Under the same excitation power, the emission intensity of Ho3+ in coprecipitation method is enhanced by about two times comparing to that in solid-state reaction method. The novel ultraviolet and violet emissions of the Ho3+ are firstly obtained which are centered at 360 (5G2→5I8),391 (3K7→5I8),412 (5G4→5I8), and 446 nm (5G5→5I8). The luminescence decay profiles of 545 and 652 nm visible emissions were obtained with a 980 nm pulsed laser. The excitation power dependence of the emission intensity was also measured and intensity saturation was observed. Based on the level structures of Ho3+, two- and three-photon processes are suggested to perform populations of 5S2 and 5G3 (Ho3+) levels, respectively. The dominant upconversion mechanism may be attributed to a cooperative sensitization process of two excited states of Yb3+ and energy transfers from Yb3+ to Ho3+.
Ending Page	807
Page Count	7
Starting Page	801
File Format	PDF
ISSN	09462171
e-ISSN	14320649
Journal	Applied Physics B
Issue Number	4
Volume Number	93
Language	English
Publisher	Springer-Verlag
Publisher Date	2008-10-15
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Optical Spectroscopy, Ultrafast Optics Laser Technology and Physics, Photonics Physical Chemistry Electromagnetism, Optics and Lasers Physics and Applied Physics in Engineering Quantum Optics, Quantum Electronics, Nonlinear Optics
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy

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