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Proceedings Paper

Multiwavelength upconversion lasers in fluoride crystals
Author(s): Ross A. McFarlane; M. Robinson; S. A. Pollack
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Paper Abstract

Cooperative multi-ion energy transfer and two-step excitation processes have been used to achieve population inversion and laser action in erbium-doped YLiF4 and BaY2F8. Pulsed and cw experiments have been carried out to provide details of the pumping pathways and to identify systems having particularly favorable values for the upconversion transfer coefficient. Examples of laser emission at four wavelengths shorter than the cw pump will be described for YLiF4. Pulsed IR laser output has been demonstrated in BaY2F8:Er, where the time dependence confirms efficient cooperative energy transfer associated with the 4I13/2 level. Spectroscopic and kinetic data are reported.

Paper Details

Date Published: 1 April 1990
PDF: 9 pages
Proc. SPIE 1223, Solid State Lasers, (1 April 1990); doi: 10.1117/12.18424
Show Author Affiliations
Ross A. McFarlane, Hughes Research Labs. (United States)
M. Robinson, Hughes Research Labs. (United States)
S. A. Pollack, Hughes Aircraft Co. (United States)

Published in SPIE Proceedings Vol. 1223:
Solid State Lasers
George Dube, Editor(s)

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