Limitation due to three-photon absorption on the useful spectral range for nonlinear optics in AlGaAs below half band gap
- 11 July 1994
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 65 (2) , 147-149
- https://doi.org/10.1063/1.112654
Abstract
We report measurements of the spectral dispersion and the magnitude of three-photon absorption in Al0.18Ga0.82As for photon energies between one half and one third the band gap and show that a two-parabolic-band model is valid in this material. These results indicate that there is a limited spectral range below half the band gap in AlGaAs (and presumably all semiconductors) in which the bound electronic optical nonlinearity can be used without significant multiphoton absorption.Keywords
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