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Optics Letters

Optics Letters


  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 7 — Apr. 1, 2014
  • pp: 2080–2082

Generation of a vector doughnut beam from an internal mirror He–Ne laser

Sunil Vyas, Yuichi Kozawa, and Shunichi Sato  »View Author Affiliations

Optics Letters, Vol. 39, Issue 7, pp. 2080-2082 (2014)

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We demonstrate the direct generation of a vector doughnut mode from an internal mirror He–Ne laser using the spot defect method. A circular-shaped spot defect of 30μm in diameter with low reflectivity created on the inner surface of a cavity mirror by laser ablation suppressed the oscillation of a Gaussian beam resulting in the oscillation of a doughnut beam. Polarization investigation showed that the generated beam was a vector hybrid mode.

© 2014 Optical Society of America

OCIS Codes
(140.3410) Lasers and laser optics : Laser resonators
(140.3580) Lasers and laser optics : Lasers, solid-state
(260.1440) Physical optics : Birefringence
(260.5430) Physical optics : Polarization

ToC Category:
Lasers and Laser Optics

Original Manuscript: December 20, 2013
Revised Manuscript: February 21, 2014
Manuscript Accepted: February 27, 2014
Published: March 27, 2014

Sunil Vyas, Yuichi Kozawa, and Shunichi Sato, "Generation of a vector doughnut beam from an internal mirror He–Ne laser," Opt. Lett. 39, 2080-2082 (2014)

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