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Multiphoton ionization spectra and tunable fifth-harmonic production near five-photon resonances in Xe and Ar

Journal Article · · Phys. Rev. A; (United States)
Through multiphoton ionization measurements, we have observed the interference of five-photon and internally generated fifth-harmonic excitation processes in ..delta..J = 1 even-odd parity resonant transitions in Xe and Ar. In agreement with theory, these five-photon resonances are not observable in single-pass laser beams, but are convincingly observed in counterpropagating beams. In the negatively dispersive regions of the 5d(3/2)/sup 0/J = 1 level of Xe, tunable fifth-harmonic light is generated by phase matching with various buffer-gas mixtures. The fifth-harmonic profiles are in good agreement with calculated phase-matching curves.
Research Organization:
Chemical Physics Section, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6378
DOE Contract Number:
AC05-84OR21400
OSTI ID:
6511760
Journal Information:
Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 35:12; ISSN PLRAA
Country of Publication:
United States
Language:
English