Coherent combining of a 4 kW, eight-element fiber amplifier array Yu, C. X. ; Augst, S. J. ; Redmond, S. M. ; Goldizen, K. C. ; Murphy, D. V. ; Sanchez, A. ; Fan, T. Y. Abstract Publication: Optics Letters Pub Date: July 2011 DOI: 10.1364/OL.36.002686 Bibcode: 2011OptL...36.2686Y