Abstract

We demonstrate a scalable architecture for a high-power, high-brightness, solid-state laser based on coherent combinations of master oscillator power amplifier chains. A common master oscillator injects a sequence of multikilowatt Nd:YAG zigzag slab amplifiers. Adaptive optics correct the wavefront of each amplified beamlet. The beamlets are tiled side by side and actively phase locked to form a single output beam. The laser produces 19kW with beam quality <2× diffraction limited. To the best of our knowledge, this is the brightest cw solid-state laser demonstrated to date.

© 2006 Optical Society of America

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