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Conference Paper
Advanced Solid-State Photonics
Vienna Austria
February 6, 2005
ISBN: 1-55752-792-X
Lasers: 2-µm Lasers (2L)

Comparison of Laser Performance for Diode-Pumped Tm:YLF of Various Doping Concentrations

J. I. Mackenzie, S. So, D. P. Shepherd, and W. A. Clarkson


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Single-end-pumped laser performance of 2, 4, and 6at.% Tm-doped YLF rods is reported. For the pumping configuration employed, crystal fracture was observed to occur for a thermal load per unit absorption length of ~13W/cm. The 2at.% Tm-doped crystal was found to have a quantum yield of ~90% of that of 4at.% Tm. However, due to a lower thermal loading density, the maximum possible incident pump power is predicted to be >60% higher, hence offering a greater output power per rod for the lower doping concentration. Power scaling considerations are discussed with reference to cross-relaxation, upconversion, and thermal loading of the host crystal.

© 2005 Optical Society of America

OCIS Codes
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(140.3580) Lasers and laser optics : Lasers, solid-state

J. I. Mackenzie, S. So, D. P. Shepherd, and W. A. Clarkson, "Comparison of Laser Performance for Diode-Pumped Tm:YLF of Various Doping Concentrations," in Advanced Solid-State Photonics (TOPS), C. Denman and I. Sorokina, eds., Vol. 98 of OSA Trends in Optics and Photonics (Optical Society of America, 2005), paper 202.

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