Laser Spot Welding using Pulsed Nd-YAG Laser System Diagram Control Panel Beam power : Select Beam Power 486 533 553 571 607 626 At constant beam spot size : 0.85mm. Beam spot size : Select BeamSpotSize 0.68 0.73 0.77 0.83 0.93 At constant beam power : 607 W. Graph x Close (or press ESC or click the overlay)