High harmonic generation in atomic and diatomic molecular gases using intense picosecond laser pulses-a comparison
- 28 October 1994
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic, Molecular and Optical Physics
- Vol. 27 (20) , 5119-5130
- https://doi.org/10.1088/0953-4075/27/20/024
Abstract
High harmonic generation has been investigated in the atomic gases Ar and Xe as well as in the diatomic molecular gases H2, D2, N2 and O2 using a linearly polarized picosecond dye laser (594 nm) and a linearly polarized subpicosecond Ti:sapphire/Nd:glass laser (1053 nm). The harmonic conversion efficiencies are compared by choosing different gas pairs as a function of three parameters: (1) field-free ionization potential (2) mass and (3) static average polarizability. It is shown that the ionization potential and mass are not sensitive parameters for harmonic efficiency, but the polarizability is an important factor.Keywords
This publication has 34 references indexed in Scilit:
- High harmonic generation in the multiphoton regime: correlation with polarizabilityJournal of Physics B: Atomic, Molecular and Optical Physics, 1995
- Influence of ellipticity on harmonic generationPhysical Review A, 1993
- Plasma perspective on strong field multiphoton ionizationPhysical Review Letters, 1993
- Atoms in ultra-intense laser fieldsJournal of Physics B: Atomic, Molecular and Optical Physics, 1993
- Optimizing high-order harmonic generation in strong fieldsJournal of Physics B: Atomic, Molecular and Optical Physics, 1992
- High-field harmonic generation in heliumOptics Letters, 1992
- Ultrahigh-contrast Ti:sapphire/Nd:glass terawatt laser systemOptics Letters, 1992
- Tunnel ionization of diatomic molecules by an intense CO2laserJournal of Physics B: Atomic, Molecular and Optical Physics, 1992
- Softening of themolecular bond in intense laser fieldsPhysical Review Letters, 1990
- Higher-harmonic production in a model atom with short-range potentialPhysical Review A, 1990