Z-scan method for nonlinear saturation intensity determination, using focused intense laser beams

Y. Albeck*, D. M. Kandhasamy, D. Strasser

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

We describe a method for determining saturation peak intensities of nonlinear intense field processes. The Z-scan method takes advantage of the balance between nonlinear response and interaction volume change as an intense laser pulse is focused onto a sample. We derive a robust geometric factor, directly relating the peak intensity at optimal target displacement from the focal plane and the corresponding saturation intensity. The Z-scan method allows obtaining saturation intensities with no need of a priori assumptions about the nonlinear process; surprisingly even for unfavorable finite depth samples. The method is demonstrated experimentally for an intense laser pulse interaction with molecular anions.

Original languageAmerican English
Article number053422
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume90
Issue number5
DOIs
StatePublished - 20 Nov 2014

Bibliographical note

Publisher Copyright:
© 2014 American Physical Society.

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