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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 19 — Sep. 19, 2005
  • pp: 7599–7608

Creation of optical vortices in femtosecond pulses

I. G. Mariyenko, J. Strohaber, and C. J. G. J. Uiterwaal  »View Author Affiliations


Optics Express, Vol. 13, Issue 19, pp. 7599-7608 (2005)
http://dx.doi.org/10.1364/OPEX.13.007599


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Abstract

We experimentally created a femtosecond optical vortex using a pair of computer-synthesized holographic gratings arranged in a 2f - 2f optical setup. We present measurements showing that the resulting donut mode is free of spatial chirp, and support this finding with an analysis of the optical wave propagation through our system based on the Kirchhoff-Fresnel diffraction integral. An interferogram confirms that our ultrashort vortex has topological charge 1, and a conservative experimental estimation of its duration is 280 fs. We used 25-fs radiation pulses (bandwidth approximately 40 nm) produced by a Ti:sapphire laser oscillator.

© 2005 Optical Society of America

OCIS Codes
(050.1590) Diffraction and gratings : Chirping
(050.1950) Diffraction and gratings : Diffraction gratings
(090.1760) Holography : Computer holography
(140.3300) Lasers and laser optics : Laser beam shaping
(320.7090) Ultrafast optics : Ultrafast lasers

ToC Category:
Research Papers

History
Original Manuscript: July 1, 2005
Revised Manuscript: September 9, 2005
Published: September 19, 2005

Citation
I. Mariyenko, J. Strohaber, and Cornelis Uiterwaal, "Creation of optical vortices in femtosecond pulses," Opt. Express 13, 7599-7608 (2005)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-13-19-7599


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