Energy transfer enhanced laser cooling in Ho^3+ and Tm^3+-codoped lithium yttrium fluoride

2013 ◽  
Vol 30 (4) ◽  
pp. 939 ◽  
Author(s):  
Guang-Zong Dong ◽  
Xin-Lu Zhang ◽  
Li Li
1993 ◽  
Vol 329 ◽  
Author(s):  
H. Weidner ◽  
P. L. Summers ◽  
R. E. Peale ◽  
B. H. T. Chai

AbstractHigh resolution spectroscopy of Nd3+ in Potassium Lithium Yttrium Fluoride (KLiYF5 ) at ≤80 K reveals two crystal-field sites which are equally populated independent of concentration. Site selective excitation of photoluminescence distinguishes each site's contribution to the spectra. The analysis of integrated line intensities reveals a bidirectional energy transfer between Nd3+ ions in different sites. A rapid increase in transfer rate with increasing Nd concentration is explained only if non-radiative transfer via exchange interaction contributes strongly to the effect. The observed relative decrease with increasing concentration of those emission lines which overlap strongly with opposite-site absorption lines implies that radiative transfer is also important. The energy transfer strongly depends on temperature (2 K – 80 K) which indicates the participation of phonons.


1969 ◽  
Vol 30 (6) ◽  
pp. 1483-1491 ◽  
Author(s):  
A.L. Harmer ◽  
A. Linz ◽  
D.R. Gabbe

2004 ◽  
Vol 96 (8) ◽  
pp. 4219-4224 ◽  
Author(s):  
G. Liakhou ◽  
S. Paoloni ◽  
M. Bertolotti

1976 ◽  
Vol 13 (7) ◽  
pp. 2805-2808 ◽  
Author(s):  
J. Magariño ◽  
J. Tuchendler ◽  
J. P. D'Haenens ◽  
A. Linz

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