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Proceedings Paper

Energy transfer and lasing in LiYbF4:Ho, LiYbF4:Ho,Tm, and KYb(WO4)3 crystals
Author(s): Alexander V. Sandulenko; V. A. Sandulenko; Alexandra M. Tkachuk; Alexandre N. Titov; V. M. Reiterov; V. N. Ivanov
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Paper Abstract

We have studied both theoretically and experimentally the energy transfer processes in YbLiF4:Ho3+ (0.4%) and YbLiF4:Ho3+ (0.4%),Tm3+ (10%) crystals and in the series of crystals KYb(WO4)2:Tm3+,Ho3+ (0.4%) with the thulium concentration 5; 10; and 20%. The population kinetics of the 5I7 holmium level was studied under the 1.047 micrometers Q-switched YLF:Nd3+ laser pumping. The efficiency of energy transfer processes in Ho3+ doped crystals, codoped with Yb3+ and Tm3+, was demonstrated. With an YbLiF4:Ho3+ (0.4%) laser rod we have obtained lasing at 2.06 micrometers with the total efficiency of 4.8% and the slope efficiency of 11%. In the KYb(WO4)2:Tm3+ (10%),Ho3+ (0.4%) crystal, lasing was obtained for the first time at 2 micrometers . The pumping threshold being approximately 150 mJ, total efficiency 6% and slope efficiency 9.7% was achieved.

Paper Details

Date Published: 29 December 1998
PDF: 9 pages
Proc. SPIE 3682, Laser Optics '98: Solid State Lasers, (29 December 1998); doi: 10.1117/12.334775
Show Author Affiliations
Alexander V. Sandulenko, S.I. Vavilov State Optical Institute (Russia)
V. A. Sandulenko, S.I. Vavilov State Optical Institute (Russia)
Alexandra M. Tkachuk, S.I. Vavilov State Optical Institute (Russia)
Alexandre N. Titov, S.I. Vavilov State Optical Institute (Russia)
V. M. Reiterov, S.I. Vavilov State Optical Institute (Russia)
V. N. Ivanov, S.I. Vavilov State Optical Institute (Russia)

Published in SPIE Proceedings Vol. 3682:
Laser Optics '98: Solid State Lasers
Vladimir I. Ustugov, Editor(s)

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