Low-temperature high-resolution VUV spectroscopy of Ce3+ doped LiYF4, LiLuF4 and LuF3 crystals

Autor: E. Negodin, Vladimir N. Makhov, J.Y. Gesland, J.C. Krupa, N.Yu Kirikova, Marco Kirm
Přispěvatelé: Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Rok vydání: 2004
Předmět:
Zdroj: Journal of Luminescence
Journal of Luminescence, Elsevier, 2004, 110, pp.135-145. ⟨10.1016/j.jlumin.2004.05.002⟩
ISSN: 0022-2313
1872-7883
DOI: 10.1016/j.jlumin.2004.05.002
Popis: For LiYF 4 :Ce 3+ , LiLuF 4 :Ce 3+ and LuF 3 :Ce 3+ crystals UV/visible emission and time-resolved VUV/UV excitation spectra were recorded at liquid helium temperature with spectral resolution of 0.1 nm for excitation spectra and better than 0.3 nm for emission spectra. Well resolved fine structures due to zero-phonon lines were clearly observed in both excitation and emission spectra for LiYF 4 :Ce 3+ and LiLuF 4 :Ce 3+ . For LuF 3 :Ce 3+ crystal no fine structure was detected in the spectra even at the highest spectral resolution. Under the host excitation, the fine structure for high-energy emission band of Ce 3+ (5d– 2 F 5/2 ) in LiLuF 4 :Ce 3+ becomes well pronounced because of weaker reabsorption effect, as compared to Ce 3+ 4f–5d absorption, due to small penetration depth for exciting radiation. As a result the crystal-field splitting for 2 F 7/2 and 2 F 5/2 levels of Ce 3+ in LiLuF 4 crystal was measured. First observation of zero-phonon lines at ∼81,550 and ∼82,900 cm −1 as well as vibronic side bands due to interconfigurational 4f 14 –4f 13 5d transitions in Lu 3+ is reported for excitation spectrum of LiLuF 4 :Ce 3+ .
Databáze: OpenAIRE
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