Dispersion of n2 in solids

Mansoor Sheik-Bahae; David C. Hutchings; David J. Hagan; M. J. Soileau; Eric W. Van Stryland

doi:10.1117/12.27554

1 June 1991 Dispersion of n₂ in solids

Mansoor Sheik-Bahae, David C. Hutchings, David J. Hagan, M. J. Soileau, Eric W. Van Stryland

Proceedings Volume 1441, Laser-Induced Damage in Optical Materials: 1990; (1991) https://doi.org/10.1117/12.27554
Event: Laser-Induced Damage in Optical Materials: 1990, 1990, Boulder, CO, United States

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.

Citation Download Citation

Mansoor Sheik-Bahae, David C. Hutchings, David J. Hagan, M. J. Soileau, and Eric W. Van Stryland "Dispersion of n₂ in solids", Proc. SPIE 1441, Laser-Induced Damage in Optical Materials: 1990, (1 June 1991); https://doi.org/10.1117/12.27554

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