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Er3+:YAlO3 upconversion laser

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1 Author(s)
Scheps, R. ; RDT&E Div., Naval Command, Control, & Ocean Surveillance Center, San Diego, CA, USA

Upconversion lasing in Er:YAlO3 is reported. Laser emission was produced using both sequential two-step pumping and cross-relaxation energy transfer. In addition, photon avalanche upconversion pumping was demonstrated. Selection among these pumping mechanisms is determined by the pump wavelength, and laser operation was obtained with excitation between 785 nm and 840 nm. The highest laser output power was achieved at 34°K, where 918 mW of pump power at 807 nm produced 121 mW of TEM00 emission. The optical conversion efficiency was 13%. Repetitively Q-switched operation is reported, and the temporal- and temperature-dependence of the laser output is discussed

Published in:

Quantum Electronics, IEEE Journal of  (Volume:30 ,  Issue: 12 )

Date of Publication:

Dec 1994

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