Kramers-Kronig relation between n2 and two-photon absorption

Mansoor Sheik-Bahae; David J. Hagan; Ali A. Said; James Young; Tai-Huei Wei; Eric W. Van Stryland

doi:10.1117/12.21687

1 October 1990 Kramers-Kronig relation between n2 and two-photon absorption

Mansoor Sheik-Bahae, David J. Hagan, Ali A. Said, James Young, Tai-Huei Wei, Eric W. Van Stryland

Proceedings Volume 1307, Electro-Optical Materials for Switches, Coatings, Sensor Optics, and Detectors; (1990) https://doi.org/10.1117/12.21687
Event: 1990 Technical Symposium on Optics, Electro-Optics, and Sensors, 1990, Orlando, FL, United States

Abstract

Nonlinear refractive index and two-photon absorption measurements on semiconductors show that the bound electronic nonlinearity can be calculated from two-photon absorption dispersion via a simple Kramers- Kronig analysis. This analysis shows n2 changing from positive to negative as the photon energy approaches the band-gap energy, consistent with observations. Additionally, this simple calculation, which assumes two parabolic bands, gives good agreement with measured values of n2 in wide-gap dielectrics that are 2 to 3 orders of magnitude smaller than in semiconductors.

Citation Download Citation

Mansoor Sheik-Bahae, David J. Hagan, Ali A. Said, James Young, Tai-Huei Wei, and Eric W. Van Stryland "Kramers-Kronig relation between n2 and two-photon absorption", Proc. SPIE 1307, Electro-Optical Materials for Switches, Coatings, Sensor Optics, and Detectors, (1 October 1990); https://doi.org/10.1117/12.21687

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