Original Article

Optical Review

, Volume 4, Issue 2, pp 277-283

First online:

Beam Recombination Characteristics in Array Laser Amplification Using Stimulated Brillouin Scattering Phase Conjugation

  • Hong Jin KongAffiliated withDepartment of Physics, Korea Advanced Institute of Science and Technology
  • , Jae Yong LeeAffiliated withDepartment of Physics, Korea Advanced Institute of Science and Technology
  • , Yun Sup ShinAffiliated withDepartment of Physics, Korea Advanced Institute of Science and Technology
  • , Jae Oh ByunAffiliated withDepartment of Physics, Korea Advanced Institute of Science and Technology
  • , Hee Su ParkAffiliated withDepartment of Physics, Korea Advanced Institute of Science and Technology
  • , Hyogun KimAffiliated withKumho Information & Telecommunication Lab.

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Abstract

Beam recombination characteristics were numerically investigated in array laser amplification using stimulated Brillouin scattering phase conjugation. To clarify the effect of piston errors due to imperfect phase locking, spatial intensity profiles of the beam recombination output were calculated in both the near and the far field on the basis of Rayleigh-Sommerfeld diffraction theory. The analyses indicate that piston errors are seriously detrimental to the quality of a beam recombination output and should be eliminated by a proper phase locking. It is also found that the gap between the beam splitting-combining wedges has a negligible effect.

Key words

array laser amplification beam recombination phase-conjugate mirror stimulated Brillouin scattering piston error phase locking