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10 February 2011 Coherent combining of low-peak-power pulsed fiber amplifiers with 80-ns pulse duration
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Abstract
We investigate the feasibility of pulsed fiber amplifier coherent combining. Therefore, we characterize phase fluctuations in low-peak-power pulsed fiber amplifiers using two different interferometric techniques. These measurements reveal that for low peak-powers, phase fluctuations remain moderate during the pulses. Noticeable phase fluctuations occurring between the pulses can be perfectly controlled using classical continuous-wave-efficient combining techniques. Results of such realization combining two low-peak-power pulsed fiber amplifiers, using classical frequency-tagging coherent combining techniques, are presented. Phase difference measurement is performed between pulses using a small signal leak from the common master oscillator. For the first time to our knowledge, successful coherent combining of two low-peak- power pulsed fiber amplifiers is thereby demonstrated.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Pierre Bourdon, Kevin Cadoret, Laurent Lombard, Adrian Azarian, Guillaume Canat, Baya Bennaï, Didier Goular, Véronique Jolivet, Yves Jaouën, and Olivier Vasseur "Coherent combining of low-peak-power pulsed fiber amplifiers with 80-ns pulse duration", Proc. SPIE 7914, Fiber Lasers VIII: Technology, Systems, and Applications, 79140W (10 February 2011); https://doi.org/10.1117/12.875165
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