Wellmann, F.; Bode, N.; Wessels, P.; Overmeyer, L.; Neumann, J. et al.: Low noise 400 W coherently combined single frequency laser beam for next generation gravitational wave detectors. In: Optics Express (OpEx) 29 (2021), Nr. 7, 10140. DOI:
https://doi.org/10.1364/oe.420350