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Optics Letters

Optics Letters


  • Vol. 25, Iss. 13 — Jul. 1, 2000
  • pp: 939–941

Continuous-phase elements can improve laser beam quality

Ram Oron, Nir Davidson, Asher A. Friesem, and Erez Hasman  »View Author Affiliations

Optics Letters, Vol. 25, Issue 13, pp. 939-941 (2000)

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Siegman [Opt. Lett. 18, 675 (1993)] showed that binary-phase plates cannot improve laser beam quality. We demonstrate that continuous spiral phase elements can improve the quality of beams that originate from a laser operating with a pure high-order transverse mode. A theoretical analysis is presented, along with experimental results obtained with a CO2 laser. The results reveal that a nearly optimal Gaussian output beam can be obtained with only a small decrease in the output power.

© 2000 Optical Society of America

OCIS Codes
(050.5080) Diffraction and gratings : Phase shift
(070.6110) Fourier optics and signal processing : Spatial filtering
(140.3300) Lasers and laser optics : Laser beam shaping
(140.3430) Lasers and laser optics : Laser theory
(140.3570) Lasers and laser optics : Lasers, single-mode

Ram Oron, Nir Davidson, Asher A. Friesem, and Erez Hasman, "Continuous-phase elements can improve laser beam quality," Opt. Lett. 25, 939-941 (2000)

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