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Simultaneous measurements of the two-photon absorption coefficient and the free-carrier absorption cross-section in AlGaAs waveguides

Daniel H. G. Espinosa, Stephen R. Harrigan, Kashif M. Awan, Payman Rasekh, and Ksenia Dolgaleva

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Abstract

Using nonlinear transmittance technique, we measured the two-photon absorption coefficient and free-carrier absorption cross-section of AlGaAs waveguides of strip-loaded, nanowire and half-core geometries at the telecommunication C-band wavelengths.

© 2020 The Author(s)

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