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Measurements of heating and energy storage in flashlamp-pumped Nd:YAG and Nd-doped phosphate laser glasses

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2 Author(s)
M. Mangir ; Hughes Res. Labs., Malibu, CA, USA ; D. Rockwell

We have experimentally measured the energy stored and the heat generated in flashlamp-pumped Nd:YAG and six different commercially available Nd-doped phosphate glasses. We find that the normalized heating parameter X , defined as the heat deposited per unit stored energy, is 1.5-2 times the value expected from the known spectroscopy of the Nd ions in these hosts and the emission spectrum of Xenon flashlamps. We discuss the heat sources in Nd-doped glasses. Using a theoretical model, we calculate the influence of Nd concentration, flashlamp pulse length, and current density on X , and we point out the effects of X on practical laser designs.

Published in:

IEEE Journal of Quantum Electronics  (Volume:22 ,  Issue: 4 )