Multiwavelength upconversion lasers in fluoride crystals

Ross A. McFarlane; M. Robinson; S. A. Pollack

doi:10.1117/12.18424

1 April 1990 Multiwavelength upconversion lasers in fluoride crystals

Ross A. McFarlane, M. Robinson, S. A. Pollack

Proceedings Volume 1223, Solid State Lasers; (1990) https://doi.org/10.1117/12.18424
Event: OE/LASE '90, 1990, Los Angeles, CA, United States

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 ⁴I_13/2level. Spectroscopic and kinetic data are reported.

Citation Download Citation

Ross A. McFarlane, M. Robinson, and S. A. Pollack "Multiwavelength upconversion lasers in fluoride crystals", Proc. SPIE 1223, Solid State Lasers, (1 April 1990); https://doi.org/10.1117/12.18424

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