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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 50, Iss. 10 — Apr. 1, 2011
  • pp: 1374–1381

Generation of optical vortices with an adaptive helical mirror

Devinder Pal Ghai  »View Author Affiliations


Applied Optics, Vol. 50, Issue 10, pp. 1374-1381 (2011)
http://dx.doi.org/10.1364/AO.50.001374


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Abstract

Generation of optical vortices using a new design of adaptive helical mirror (AHM) is reported. The new AHM is a reflective device that can generate an optical vortex of any desired topological charge, both positive and negative, within its breakdown limits. The most fascinating feature of the AHM is that the topological charge of the optical vortex generated with it can be changed in real time by varying the excitation voltage. Generation of optical vortices up to topological charge 4 has been demonstrated. The presence of a vortex in the optical field generated with the AHM is confirmed by producing both fork and spiral fringes in an interferometric setup. Various design improvements to further enhance the performance of the reported AHM are discussed. Some of the important applications of AHM are also listed.

© 2011 Optical Society of America

OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(120.5060) Instrumentation, measurement, and metrology : Phase modulation
(140.3300) Lasers and laser optics : Laser beam shaping
(230.4040) Optical devices : Mirrors
(350.4855) Other areas of optics : Optical tweezers or optical manipulation
(260.6042) Physical optics : Singular optics

ToC Category:
Physical Optics

History
Original Manuscript: October 5, 2010
Revised Manuscript: December 10, 2010
Manuscript Accepted: December 21, 2010
Published: March 25, 2011

Citation
Devinder Pal Ghai, "Generation of optical vortices with an adaptive helical mirror," Appl. Opt. 50, 1374-1381 (2011)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-50-10-1374

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