Published August 20, 2004 | Version v1
Journal article

Observation of two-photon above-threshold ionization of rare gases by xuv harmonic photons

  • 1. Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa 277-8581 (Japan)
  • 2. Institute of Advanced Energy, Kyoto University, Gokasho, Uji, Kyoto 611-0011 (Japan)

Description

We have successfully observed two-photon above-threshold ionization in rare gas atoms (Ar, Xe, and He) by the fifth harmonic (25 eV photon energy) of a KrF laser. Use of the energy-resolved photoelectron counting system together with our laser, providing strong 25 eV radiation at 40-100 Hz, enabled us to detect the very weak single-color two-photon above-threshold ionization signals. Experimental data are in good agreement with our theoretical calculations newly developed along the line of multichannel quantum defect theory

Additional details

Publishing Information

Journal Title
Physical Review Letters
Journal Volume
93
Journal Issue
8
Journal Page Range
p. 083903-083903.4
ISSN
0031-9007
CODEN
PRLTAO

Optional Information

Notes
(c) 2004 The American Physical Society