Powerlase ST6 Full Powered Nd: YAG Laser PoweLase: The Ultimate Soft Tissue Laser... Perfect for Laser Soft Care Advancced Features Assure Optimum Results. Free Running for Peak Performace. PowerLase ST6: Big Power in a small Pakage. A Breakthrough in Laser Miniaturization. Dual Duration Technology of the ST6. More then a Perrodontal Treatment Laser.