We show that the proper use of a self-imaging confocal cavity can be a simple way to optimize the efficiency of optical pumping of solid-state lasers. In this type of resonator the transverse mode self-adjusts to fit the pumped volume optimally. Self-optimization of the mode size of a laser-diode pump Nd:YAG laser (54% slope efficiency) is demonstrated, and an intrinsic efficiency of 68% is measured.
© 1994 Optical Society of America
Original Manuscript: February 22, 1994
Published: August 1, 1994
V. Couderc, O. Guy, A. Barthelemy, C. Froehly, and F. Louradour, "Self-optimized resonator for optical pumping of solid-state lasers," Opt. Lett. 19, 1134-1136 (1994)