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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 21 — Oct. 21, 2013
  • pp: 25069–25076

Corrections to the knife-edge based reconstruction scheme of tightly focused light beams

C. Huber, S. Orlov, P. Banzer, and G. Leuchs  »View Author Affiliations


Optics Express, Vol. 21, Issue 21, pp. 25069-25076 (2013)
http://dx.doi.org/10.1364/OE.21.025069


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Abstract

The knife-edge method is an established technique for profiling light beams. It was shown, that this technique even works for tightly focused beams, if the material and geometry of the probing knife-edges are chosen carefully. Furthermore, it was also reported recently that this method fails, when the knife-edges are made from pure materials. The artifacts introduced in the reconstructed beam shape and position depend strongly on the edge and input beam parameters, because the knife-edge is excited by the incoming beam. Here we show, that the actual beam shape and spot size of tightly focused beams can still be derived from knife-edge measurements for pure edge materials and different edge thicknesses by adapting the analysis method of the experimental data taking into account the interaction of the beam with the edge.

© 2013 OSA

OCIS Codes
(050.1940) Diffraction and gratings : Diffraction
(240.6680) Optics at surfaces : Surface plasmons
(260.5430) Physical optics : Polarization
(140.3295) Lasers and laser optics : Laser beam characterization
(050.6624) Diffraction and gratings : Subwavelength structures

ToC Category:
Diffraction and Gratings

History
Original Manuscript: August 13, 2013
Manuscript Accepted: October 1, 2013
Published: October 14, 2013

Citation
C. Huber, S. Orlov, P. Banzer, and G. Leuchs, "Corrections to the knife-edge based reconstruction scheme of tightly focused light beams," Opt. Express 21, 25069-25076 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-21-25069


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