redPOWER R4 up to 400W , The redPOWER R4 series of fiber lasers from SPI has been designed to meet the highest standards of reliability, performance, repeatability and user safety. The commercial advantages of fiber lasers over alternative technologies are far reaching: improved line speeds, finer machining capabilities, reduced downtime and lower cost of ownership, giving users a leading edge advantage. The laser user?s ability to control power, modulation rate, pulse width and pulse shape, together with applications tailored beam delivery and control features, make fiber lasers the tool of choice for micro-machining applications. Innovative SPI features include Extended Performance Range (XPR), Pulse Shape Equalisation (PSE) and closed loop control resulting in class leading power stability. As a result, SPI?s R4 lasers are constantly finding new cutting, welding and materials processing applications in markets including industrial, medical devices, electronics and printing.