TY - JOUR
T1 - Z-scan method for nonlinear saturation intensity determination, using focused intense laser beams
AU - Albeck, Y.
AU - Kandhasamy, D. M.
AU - Strasser, D.
N1 - Publisher Copyright:
© 2014 American Physical Society.
PY - 2014/11/20
Y1 - 2014/11/20
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84919338083&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.90.053422
DO - 10.1103/PhysRevA.90.053422
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AN - SCOPUS:84919338083
SN - 1050-2947
VL - 90
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 5
M1 - 053422
ER -