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Proceedings Paper

Dispersion of n2 in solids
Author(s): Mansoor Sheik-Bahae; David C. Hutchings; David J. Hagan; M. J. Soileau; Eric W. Van Stryland
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Paper Abstract

We recently performed an extensive series of measurements of the bound electronic nonlinear refractive index n2 of a variety of solids at several wavelengths. We found that as the photon energy approached Eg (the band-gap energy) that n2 changed from positive to negative. This observed wavelength dispersion of n2 can be well explained for wavelengths well below the fundamental absorption edge using a Kramers-Kronig transformation on the two-photon absorption coefficient fi which we had previously studied. While this theory fit the data well for O. IEghW 8Eg (Eg iS the band-gap energy) there was a significant deviation toward larger negative values of n2 near the fundamental absorption edge. We speculated that the AC Stark effect could account for this deviation.

Paper Details

Date Published: 1 June 1991
PDF: 14 pages
Proc. SPIE 1441, Laser-Induced Damage in Optical Materials: 1990, (1 June 1991); doi: 10.1117/12.27554
Show Author Affiliations
Mansoor Sheik-Bahae, CREOL/Univ. of Central Florida (United States)
David C. Hutchings, CREOL/Univ. of Central Florida (United States)
David J. Hagan, CREOL/Univ. of Central Florida (United States)
M. J. Soileau, CREOL/Univ. of Central Florida (United States)
Eric W. Van Stryland, CREOL/Univ. of Central Florida (United States)


Published in SPIE Proceedings Vol. 1441:
Laser-Induced Damage in Optical Materials: 1990
Harold E. Bennett; Lloyd L. Chase; Arthur H. Guenther; Brian Emerson Newnam; M. J. Soileau, Editor(s)

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