High optical-quality Nd3+-doped KLU(WO4)(2) crystal with sizes up to 55 mm x 27 mm x 15 mm has been successfully grown by top-seeded solution growth method. Continuous wave (CW) laser output up to 188.3 mW of Nd3+-doped KLu(WO4)(2) crystals at 1.073 mu m (in the F-4(3/2) -> I-11/2 channel) has been achieved with a I mm Nd:KLuW crystal under pumping by a 2W laser-diode (LD) at room temperature. The optical conversion efficiency is 25.3%, which is superior to the former results because 20% optical conversion efficiency was achieved with a 10 mm Nd:KLuW crystal by Kaminskii. (c) 2005 Elsevier B.V. All rights reserved.