Volume 27 Issue 07
Jun.  2015
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Article Navigation >  High Power Laser and Particle Beams  > 2015  >  27(07): 071012
Liang Xiaobao, Chen Liangming, Li Chao, et al. High average power spectral beam combining employing volume Bragg gratings[J]. High Power Laser and Particle Beams, 2015, 27: 071012. doi: 10.11884/HPLPB201527.071012
Citation: Liang Xiaobao, Chen Liangming, Li Chao, et al. High average power spectral beam combining employing volume Bragg gratings[J]. High Power Laser and Particle Beams, 2015, 27: 071012. doi: 10.11884/HPLPB201527.071012
shu

High average power spectral beam combining employing volume Bragg gratings

doi: 10.11884/HPLPB201527.071012
  • 1.

    Research Center of Laser Fusion,CAEP,P.O.Box 919-988,Mianyang 621900,China

  • Received Date: 2015-03-31
  • Rev Recd Date: 2015-05-30
  • Publish Date: 2015-06-23
    Abstract
  • We have achieved 856 W spectral beam combining output of two fiber lasers employing a transmitting volume Bragg grating (TVBG), which is the highest combining power of spectral beam combination by VBGs. The total spectral combining efficiency is 73.7% and the beam quality of combining beam is 7.9 and 2.7 in x and y direction, respectively. Though the diffraction beam is seriously stretched by angular dispersion of TVBG, the transmission beam preserves its beam properties in the high average power spectral beam combining. This indicates that the broadband fiber lasers (the spectral bandwidth is over 4 nm) can be used as transmission beam in high efficiency spectral beam combination of VBGs for higher combining power output.
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