Efficient radially polarized laser beam generation with a double interferometer.

@article{Tidwell1993EfficientRP,
  title={Efficient radially polarized laser beam generation with a double interferometer.},
  author={S. Tidwell and G. Kim and W. Kimura},
  journal={Applied optics},
  year={1993},
  volume={32 27},
  pages={
          5222-9
        }
}
Conversion of a linearly polarized CO(2) laser beam into a radially polarized beam is demonstrated with a novel double-interferometer system. The first Mach-Zehnder interferometer converts the linearly polarized input beam into two beams with sin(2) θ and cos(2) θ intensity profiles, where θ is the azimuthal angle. This is accomplished by using two spiral-phase-delay plates with opposite handedness in the two legs of the interferometer to impart a one-wave phase delay azimuthally across the… Expand
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