Optical phase unwrapping in the presence of branch points.

  title={Optical phase unwrapping in the presence of branch points.},
  author={Todd M Venema and Jason D. Schmidt},
  journal={Optics express},
  volume={16 10},
Strong turbulence causes phase discontinuities known as branch points in an optical field. These discontinuities complicate the phase unwrapping necessary to apply phase corrections onto a deformable mirror in an adaptive optics (AO) system. This paper proposes a non-optimal but effective and implementable phase unwrapping method for optical fields containing branch points. This method first applies a least-squares (LS) unwrapper to the field which isolates and unwraps the LS component of the… CONTINUE READING