Improved dynamic hyperpolarizabilities and field-gradient polarizabilities for helium

Journal Article · Fri Sep 15 04:00:00 EDT 1989 · Journal of Chemical Physics; (USA)

DOI:https://doi.org/10.1063/1.456886· OSTI ID:5508186

Bishop, D M; Pipin, J ^[1]

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1. Department of Chemistry, University of Ottawa, Ottawa K1N 6N5, Canada (CA)

Accurate and explicitly electron-correlated wave functions have been used to determine the dynamic hyperpolarizability tensor ({gamma}) and the dynamic field-gradient polarizabilities ({ital B} and {ital C}) for helium. The {gamma}-tensor is related to nonlinear optical processes such as the Kerr effect, second- and third-harmonic generation and degenerate-four-wave mixing. In the static limit our results agree completely with a previous highly accurate variational-perturbation treatment. For second-harmonic generation at {lambda}=4880 A the ratio {gamma}{sub {ital zzzz}}/{gamma}{sub {ital xxzz}} is 2.950, which may be compared with the experimental value of 2.949.

• OSTI ID: 5508186
• Journal Information: Journal of Chemical Physics; (USA), Journal Name: Journal of Chemical Physics; (USA) Vol. 91:6; ISSN JCPSA; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
DIELECTRIC PROPERTIES
ELECTRICAL PROPERTIES
ELECTRONIC STRUCTURE
ELEMENTS
FLUIDS
FREQUENCY MIXING
GASES
HARMONIC GENERATION
HELIUM
KERR EFFECT
NONLINEAR OPTICS
NONMETALS
OPTICAL PROPERTIES
OPTICS
PHYSICAL PROPERTIES
POLARIZABILITY
RARE GASES