Authors: Mathieu Paurisse, Marc Hanna, Frédéric Druon, and Patrick Georges
Abstract: “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.”
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Publication: Optics Letters
Issue/Year: Optics Letters, Vol. 35, Issue 9, pp. 1428-1430 (2010)
Wavefront Sensing by a Common-Path Interferometer for Wavefront Correction in Phase and Amplitude by a Liquid Crystal Spatial Light Modulator Aiming the Exoplanet Direct Imaging