High energy levels and high-energetic emissions of the trivalent holmium ion in LiYF4 and YF3

被引:17
作者
Peijzel, PS
Wegh, RT
Meijerink, A
Hölsä, J
Lamminmäki, RJ
机构
[1] Univ Utrecht, Debye Res Inst, Dept Condensed Matter, NL-3508 TA Utrecht, Netherlands
[2] Philips Res Labs, NL-5656 AA Eindhoven, Netherlands
[3] Univ Turku, Dept Chem, FIN-20014 Turku, Finland
关键词
vacuum ultraviolet; rare earth ions; holmium;
D O I
10.1016/S0030-4018(02)01195-1
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
The luminescence of LiYF4 and YF3 doped with Ho3+ was investigated using synchrotron radiation. In the excitation spectra transitions to previously unidentified 4f(10) levels were observed thus extending the energy level diagram of Ho3+ into the (vacuum) ultraviolet region of the electromagnetic spectrum. Some high energy emissions were observed and could be attributed to spin forbidden 4f(9)5d --> 4f(10) emissions in YF3 and LiYF4. For YF3 doped with Ho3+ emission from the P-3(1)(2) level (situated at 63 000 cm(-1)) was observed. Furthermore, several photon cascade emission processes were observed in which one VUV photon is converted into two or three UV/Vis photons, albeit with a low efficiency. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:195 / 202
页数:8
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