Journal
OPTICS LETTERS
Volume 35, Issue 9, Pages 1428-1430Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.35.001428
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- Manolia group from the Laboratoire Charles Fabry de l'Institut d'Optique
- Agence Nationale de la Recherche
- French Delegation Generale de l'Armement
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We demonstrate the active wavefront control of a 19-core ytterbium-doped fiber amplifier by the digital holography technique. The output wavefront is corrected even in the presence of large externally induced perturbations, with a measured output Strehl ratio of 0.6 in all cases. The wavefront-controlled multicore fiber is used to amplify 800 ps pulses at 1064 nm at a repetition rate of 40 kHz, and a gain of 23 dB is obtained. (C) 2010 Optical Society of America
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