Abstract
Efficient energy transfer at room temperature from to has been demonstrated in co-doped . Because of the low phonon energies in , the energy transfer processes result in the conversion of laser diode pump energy to a broad band of mid-IR radiation between . Energy transfer pathways, rates, and quantum efficiencies are evaluated. Results show that the material is suitable as a phosphor for the spectral range that can be optically pumped with low-cost laser diodes.
© 2010 Optical Society of America
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