Energy Distribution in a Glass: Nd3+ Laser Rod

Abstract
The radial dependence of the absorbed energy distribution in a cylindrical rod of Nd3+‐glass pumped with a xenon source has been determined. Using the exact Nd3+‐glass absorption spectrum, both the total absorbed energy and the absorbed inversion energy are calculated to determine the magnitude of the energy dissipated by the host glass. In general, absorbed inversion energy and the dissipated energy are not uniform across the radius of the rod, although a value of 5×1020 ions/cm2 for the Nd3+ concentration, multiplied by the rod radius, gives a fairly uniform distribution.

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