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

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13 Author(s)
Schreiber, T. ; Fraunhofer Inst. of Appl. Opt. & Precision Eng., Jena ; Wirth, C. ; Schmidt, O. ; Andersen, T.V.
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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.

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