A general Z-scan theory

Research output: Article

36 Citations (Scopus)

Abstract

A novel Z-scan theory based on the solution of the nonlinear paraxial wave equation, completed by the Huygens-Fresnel principle is introduced. This theory is valid for the general case, i.e. for thick samples and large nonlinearities including both nonlinear refraction and absorption. In both limiting cases of thin sample and weak nonlinearity, predictions of this model are in good agreement with theories not using parabolic approximation for the beam profile. It is shown that the widely used parabolic approximation leads to inadequate results when evaluating Z-scan measurements.

Original languageEnglish
Pages (from-to)679-685
Number of pages7
JournalApplied Physics B: Lasers and Optics
Volume97
Issue number3
DOIs
Publication statusPublished - nov. 2009

Fingerprint

nonlinearity
approximation
wave equations
refraction
profiles
predictions

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physics and Astronomy (miscellaneous)

Cite this

A general Z-scan theory. / Pálfalvi, L.; Tóth, B. C.; Almási, G.; Fülöp, J.; Hebling, J.

In: Applied Physics B: Lasers and Optics, Vol. 97, No. 3, 11.2009, p. 679-685.

Research output: Article

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