QCW laser welders are ideal for spot and seam welding and long pulse drilling applications. Compact design. Cost-effectiveness far superior to conventional YAG exciters due to features such as electro-optical conversion efficiency >30% and maintenance-free operation primarily for welding of thin-walled materials, precision parts, spot welding, butt welding, stack welding and seal welding.Excellent pulse power/energy stability.Low cost solutions with both high peak power.Electro-optical conversion efficiency higher than 30%.Two operating modes: pulsed and continuous.Built-in pulse emitter.