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Incoherent Beam Combining of Continuous-Wave and Pulsed Yb-Doped Fiber Amplifiers

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13 Author(s)
Thomas Schreiber ; Fraunhofer Inst. of Appl. Opt. & Precision Eng., Jena ; Christian Wirth ; Oliver Schmidt ; Thomas V. Andersen
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We review the technique of incoherent beam combining and show experimentally the combination of four continuous wave fiber amplifiers to an average power of 2 kW and four pulsed 2 ns fiber amplifiers to an average power of 187 W (pulse energy 3.7 mJ) using binary dielectric gratings. The scaling potential and limitations are discussed in detail.

Published in:

IEEE Journal of Selected Topics in Quantum Electronics  (Volume:15 ,  Issue: 2 )