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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 38, Iss. 17 — Sep. 1, 2013
  • pp: 3223–3226

Strengthening the longitudinal component of the sharply focused electric field by means of higher-order laser beams

S. N. Khonina, S. V. Alferov, and S. V. Karpeev  »View Author Affiliations

Optics Letters, Vol. 38, Issue 17, pp. 3223-3226 (2013)

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We study the sharp focusing of differently polarized low-order and high-order beams, including Bessel and Laguerre–Gaussian (LG) modes, to compare them using several criteria: the size of a light spot, the intensity ratio of the central peak and sidelobes, and the intensity of the longitudinal electric field component. The experiments performed using the near-field microscopy techniques are in general agreement with the results of the numerical simulation. We have validated the growth of the longitudinal component in the focus for high-order modes at moderate NA = 0.6 0.8 , and essential lower sidelobes of Bessel modes, in comparison with LG modes.

© 2013 Optical Society of America

OCIS Codes
(050.1940) Diffraction and gratings : Diffraction
(260.5430) Physical optics : Polarization
(180.4243) Microscopy : Near-field microscopy

ToC Category:

Original Manuscript: June 20, 2013
Revised Manuscript: July 25, 2013
Manuscript Accepted: July 25, 2013
Published: August 19, 2013

Virtual Issues
Vol. 8, Iss. 10 Virtual Journal for Biomedical Optics

S. N. Khonina, S. V. Alferov, and S. V. Karpeev, "Strengthening the longitudinal component of the sharply focused electric field by means of higher-order laser beams," Opt. Lett. 38, 3223-3226 (2013)

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