Abstract

The LED-direct pumped laser was considered theoretically as a way to miniaturize solid state lasers. The pumping efficiency of the system was calculated numerically by 3-D ray tracing. For LiNdP4O12, an efficient Nd stoichiometric material, the threshold power density and the pump power density necessary to obtain a 5-mW output power under optimum output coupling conditions were calculated to be 20 W/cm2 and 60 W/cm2, respectively, assuming a crystal size of 50 μm × 50 μm × 5 mm.

© 1977 Optical Society of America

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