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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 16 — Aug. 8, 2005
  • pp: 6160–6167

High localization, focal depth and contrast by means of nonlinear Bessel Beams

Paolo Polesana, Daniele Faccio, Paolo Di Trapani, Audrius Dubietis, Algis Piskarskas, Arnaud Couairon, and Miguel A. Porras  »View Author Affiliations

Optics Express, Vol. 13, Issue 16, pp. 6160-6167 (2005)

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We show an experimental and computational comparison between the resolution power, the contrast and the focal depth of a nonlin-early propagated diffraction-free beam and of other beams (a linear and a nonlinearly propagated Gaussian pulse): launching a nondiffractive Bessel pulse in a solution of Coumarine 120 in methanol creates a high contrast, 40 mm long, 10 μm width fluorescence channel excited by 3-photon absorption process. This fluorescence channel exhibits the same contrast and resolution of a tightly focused Gaussian pulse, but reaches a focal depth that outclasses by orders of magnitude that reached by an equivalent Gaussian pulse.

© 2005 Optical Society of America

OCIS Codes
(190.4180) Nonlinear optics : Multiphoton processes
(190.5530) Nonlinear optics : Pulse propagation and temporal solitons

ToC Category:
Research Papers

Original Manuscript: July 8, 2005
Revised Manuscript: July 27, 2005
Published: August 8, 2005

Paolo Polesana, Daniele Faccio, Paolo Di Trapani, Audrius Dubietis, Algis Piskarskas, Arnaud Couairon, and Miguel Porras, "High localization, focal depth and contrast by means of nonlinear Bessel beams," Opt. Express 13, 6160-6167 (2005)

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