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Proceedings Paper

Two-color multiphoton ionization and harmonic generation
Author(s): F. Giammanco; P. Ceccherini; T. M. Di Palma
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Paper Abstract

We present a short summary of results dealing with the harmonic generation in N2 and Ar produced by wave-mixing of parallel polarized fundamental and second harmonics of a Nd-YAG picosecond laser with special regard to the influence of phase-matching due to refractive index electrons produced by two-color multiphoton ionization. Particularly, in this work we compare the harmonic conversion efficacy and the rate of ionization by a self-correlation technique between fundamental and second harmonics of laser. We show that ion and harmonic signal exhibit the same behavior versus the relative delay of both fields. It seems to suggest, at least in our conditions, a positive influence of ionization on harmonic conversion efficiency.

Paper Details

Date Published: 5 March 1999
PDF: 6 pages
Proc. SPIE 3735, ICONO '98: Ultrafast Phenomena and Interaction of Superstrong Laser Fields with Matter: Nonlinear Optics and High-Field Physics, (5 March 1999); doi: 10.1117/12.341466
Show Author Affiliations
F. Giammanco, Univ. degli Studi di Pisa and INFM (Italy)
P. Ceccherini, Univ. degli Studi di Pisa and INFM (Italy)
T. M. Di Palma, Univ. degli Studi di Pisa and INFM (Italy)


Published in SPIE Proceedings Vol. 3735:
ICONO '98: Ultrafast Phenomena and Interaction of Superstrong Laser Fields with Matter: Nonlinear Optics and High-Field Physics
Mikhail V. Fedorov; Vyacheslav M. Gordienko; Vladimir V. Shuvalov; Vladimir D. Taranukhin, Editor(s)

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