A new cavity for diode side-pumped solid-state lasers was designed, built, and tested. The results were efficient absorption of pumped light in the media and homogeneous pumped-beam distribution under various pump-power levels, which generated Nd:YAG active media of different radii and concentrations and shifts of the diode wavelength. Full-multimode quasi-continuous pump operation with a slope efficiency of 40.5% was obtained from a plane–plane resonator equipped with two Nd:YAG rods. At a maximum average pump power of 1.33 kW, the optical-to-optical efficiency was 31.4%. Single-transverse-mode operation (<i>M</i><sup>2</sup> factor of less than 1.1) of 163 W was demonstrated.
© 2000 Optical Society of America
Nicolaie Pavel, Yoshihito Hirano, Syuhei Yamamoto, Yasuharu Koyata, and Toru Tajime, "Improved Pump-Beam Distribution in a Diode Side-Pumped Solid-State Laser with a Highly Diffuse, Cross-Axis Beam Delivery System," Appl. Opt. 39, 986-992 (2000)