Accession Number:

ADA279449

Title:

S-d Hybridization and Anisotropy of the Optical Second Harmonic at Low Frequencies

Descriptive Note:

Technical rept. Jun 1993-May 1994

Corporate Author:

OREGON UNIV EUGENE DEPT OF CHEMISTRY

Personal Author(s):

• Bunson, Paul E.
• Haydock, Roger
• Richmond, G. L.

Report Date:

1994-05-13

Pagination or Media Count:

16.0

Abstract:

Recent experiments show that the anisotropy of the optical second harmonic SHG response from noble metal surfaces persists at frequencies below those associated with interband transitions and plasma resonances. It is proposed that for noble metals this anisotropy is a consequence of the hybridization between s- and d-orbitals. By taking advantage of a moment expansion and related path counting methods, the relative importance of the different contributions to SHG can be identified. To illustrate this result, the nonlinear polarizations are calculated using the recursion method. Second harmonic generation at low frequencies, Noble metal surfaces, Hybridization

Descriptors:

• *METALS
• *OPTICAL PROPERTIES
• *SECOND HARMONIC GENERATION
• FREQUENCY
• HARMONICS
• COUNTING METHODS
• PATHS
• MOMENTS
• SINGLE CRYSTALS
• SURFACES
• ANISOTROPY
• TRANSITIONS
• EXPANSION
• HYBRIDIZATION
• LOW FREQUENCIES

Subject Categories:

• Metallurgy and Metallography
• Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE