High-power lamp pumped YAG lasers of 10kW average output power with good be
am quality have been developed by using MOPA (Master Oscillator Power Ampli
fier) arrangement with multi-pump cavities for oscillator and amplifiers. N
d:YAG laser system with 14-rod cavities, which can generate world-highest o
utput power of 10kW or more as a solid state laser, have been developed for
thick plate processing with 137mm mrad (M(2)similar to 101) beam parameter
product. This laser system has achieved transmission to 9kW or more for ph
i 800 mu m/NA0.2 fiber.