Title :
Incoherent Beam Combining of Continuous-Wave and Pulsed Yb-Doped Fiber Amplifiers
Author :
Schreiber, Thomas ; Wirth, Christian ; Schmidt, Oliver ; Andersen, Thomas V. ; Tsybin, Igor ; Böhme, Steffen ; Peschel, Thomas ; Brückner, Frank ; Clausnitzer, Tina ; Röser, Fabian ; Eberhardt, Ramona ; Limpert, Jens ; Tünnermann, Andreas
Author_Institution :
Fraunhofer Inst. of Appl. Opt. & Precision Eng., Jena
Abstract :
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.
Keywords :
diffraction gratings; laser beams; optical fibre amplifiers; ytterbium; average power; binary dielectric gratings; continuous wave fiber amplifiers; incoherent beam combining; pulse energy; scaling potential; High-power fiber laser and amplifiers; photonic crystal fiber; spectral beam combining (SBC);
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/JSTQE.2008.2012267
