Stable 4 W CW solid-state green source pumped by fibre-coupled diode-laser arrays

摘要

A high-power Nd:YAG laser end-pumped by a fibre-coupled diode-laser array system is described. When operated at 1 mum, the device produced 10 W of output power in the TEM00 transverse mode with a slope efficiency of 43%. The system was operated using both 600 mum and 400 mum core, 0.37 N.A. multimode fibres for delivery of the pump radiation, and also with Nd:YVO4 as the gain material. By intracavity doubling with KTP, 4 W of non-chaotic two-mode 0.5 mum output was obtained.