4 May 2010 Advances and limitations in beam combination of kilowatt fiber amplifiers
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Abstract
The power record for near-diffraction limited output from a single fiber laser amplifier is now 10 KW. However, a single fiber appears unlikely to approach powers greater than 100 kW, which is needed for some applications. Therefore, there is great interest in methods for combination of many high power fiber beams that maintain aggregate beam quality. A number of methods have been proposed, including active and passive phasing, and spectral combination. These methods have varying implementation and performance advantages. The limitations of these methods, and approaches to address them, are discussed as applied toward combination of kilowatt-class fiber amplifiers.
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Joshua E. Rothenberg, Gregory D Goodno, "Advances and limitations in beam combination of kilowatt fiber amplifiers", Proc. SPIE 7686, Laser Technology for Defense and Security VI, 768613 (4 May 2010); doi: 10.1117/12.849488; https://doi.org/10.1117/12.849488
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