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Proceedings Paper

Pump-probe experiments with Ce3++Yb3+:KY3F10 and Ce3++Yb3+:CaF2 crystals
Author(s): S. A. Kirysheva; A. S. Nizamutdinov; V. V. Semashko; A. K. Naumov; S. L. Korableva
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Paper Abstract

Here we report on pump-probe studies of KY3F10 and CaF2 doped with Ce3+ and Yb3+ ions. The crystals Ce3+:KY3F10 and Ce3+:CaF2 show attractive spectral characteristics for tunable UV lasers application but have poor photochemical stability. Their properties under intense UV pumping are affected by excited state absorption and color centers formation. This work was aimed at dynamic processes investigation induced by laser radiation of UV spectral range in KY3F10 and CaF2 doped with Ce3+ and Yb3+ ions. Optical gain was observed on CaF2:3++Yb3+ in the range 325-335 nm for the first time. It proves Yb3+ ions coactivation antisolarant effect elaborated by us earlier. It is shown that in investigated crystals under a pump radiation, resonant to 4f-5d Ce3+ ions transitions several types of color centers (CC) are formed. Set of these CC types are determine the absorption at expected stimulated emission spectral range and magnitude of the induced loses is dependent on many factors. As a result of competition between CC formation, free charges recombination and CC photodestruction this balance can be shifted towards either rising or dropping losses at 5d-4f Ce3+ ions luminescence spectral range.

Paper Details

Date Published: 7 February 2011
PDF: 7 pages
Proc. SPIE 7994, LAT 2010: International Conference on Lasers, Applications, and Technologies, 79940G (7 February 2011); doi: 10.1117/12.881867
Show Author Affiliations
S. A. Kirysheva, Kazan (Volga Region) Federal Univ. (Russian Federation)
A. S. Nizamutdinov, Kazan (Volga Region) Federal Univ. (Russian Federation)
V. V. Semashko, Kazan (Volga Region) Federal Univ. (Russian Federation)
A. K. Naumov, Kazan (Volga Region) Federal Univ. (Russian Federation)
S. L. Korableva, Kazan (Volga Region) Federal Univ. (Russian Federation)


Published in SPIE Proceedings Vol. 7994:
LAT 2010: International Conference on Lasers, Applications, and Technologies
Vladislav Panchenko; Gérard Mourou; Aleksei M. Zheltikov, Editor(s)

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