Multiphoton ionization of V, Cr, Y, La, and Ir through 0.5-ps ultraviolet laser pulses

B. Witzel; N. A. Papadogiannis; C. J. G. J. Uiterwaal; H. Schröder; D. Charalambidis

doi:10.1103/PhysRevA.60.3311

Multiphoton ionization of V, Cr, Y, La, and Ir through 0.5-ps ultraviolet laser pulses

B. Witzel, N. A. Papadogiannis, C. J. G. J. Uiterwaal, H. Schröder, and D. Charalambidis

Phys. Rev. A 60, 3311 – Published 1 October 1999

Abstract

The two-photon ionization of the metal atoms V, Cr, Y, La, and Ir sputtered by an Ar-ion gun from solid targets has been investigated using linearly polarized laser pulses of 500-fs duration and 248.6-nm (KrF) wavelength in combination with mass spectroscopy that is free of volume effects. A near-resonant ionization process has to be attributed to all five atoms. By fitting analytical solutions of a rate equation model describing the temporal evolution of the ionization process, we can determine absolute values of the one-photon cross sections and saturation intensities.

Received 29 April 1999

DOI:https://doi.org/10.1103/PhysRevA.60.3311

Authors & Affiliations

B. Witzel^1,*, N. A. Papadogiannis¹, C. J. G. J. Uiterwaal³, H. Schröder², and D. Charalambidis^1,3

¹Foundation for Research and Technology–Hellas, Institute of Electronic Structure and Laser, Laser and Applications Division, P.O. Box 1527, GR-711 10 Heraklion, Crete, Greece
²Max-Planck-Institut für Quantenoptik, P.O. Box 1513, D-85740 Garching, Federal Republic of Germany
³University of Crete, Heraklion, Crete, Greece

^*Author to whom correspondence should be addressed. Electronic address: witzel@luce.iesl.forth.gr

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Vol. 60, Iss. 4 — October 1999

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