1.6 of TEM00 cw output at 1.06 mu m from Nd : CNGG laser end-pumped by a fiber-coupled diode laser array

摘要

In this paper we demonstrated and analyzed a high-power cw Nd:CNGG laser end-pumped by a fiber-coupled diode laser array in a convex-concave-type cavity. TEM00 mode output power of 1.63 W was obtained with 27% optical-to-optical conversion efficiency and slope efficiency of 44.5%. Thermal lensing and its variation with the incident pump power for this crystal have been measured. The coefficient for pump power induced diffraction losses of Nd:CNGG crystal have also been estimated for this laser configuration. (C) 2002 Elsevier Science Ltd. All rights reserved. [References: 19]