Influence of the density of a medium on high-order harmonic generation by atoms in strong laser fields

Journal Article · Wed Sep 30 00:00:00 EDT 1998 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE1998V028N09ABEH001326· OSTI ID:21437807

Taranukhin, Vladimir D ^[1]

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1. Department of Physics, M.V. Lomonosov Moscow State University, Moscow (Russian Federation)

An investigation is reported of the maximum possible increase in the density of a medium needed to increase the efficiency of high-order harmonic generation by atoms ionised with high-intensity radiation. This investigation is based on a classical description of the motion of a quasi-free photoelectron in a continuum and of its perturbation by the surrounding ions. A strong dependence of the optimal concentration of atoms on the pump radiation wavelength is revealed. The spectral characteristics of high-order harmonic generation resulting from an increase in the density of the medium are predicted. (nonlinear optical phenomena)

• OSTI ID: 21437807
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Vol. 28, Issue 9; Other Information: DOI: 10.1070/QE1998v028n09ABEH001326; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ATOMS
DENSITY
DISTURBANCES
EFFICIENCY
HARMONIC GENERATION
IONIZATION
IONS
LASER RADIATION
NUCLEAR PUMPING
WAVELENGTHS
CHARGED PARTICLES
ELECTROMAGNETIC RADIATION
FREQUENCY MIXING
PHYSICAL PROPERTIES
PUMPING
RADIATIONS