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Nonlinear absorption in a GaAs waveguide just above half the band gap

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6 Author(s)
Villeneuve, A. ; CREOL, Central Florida Univ., Orlando, FL, USA ; Yang, C.C. ; Stegeman, G.I. ; Ironside, C.N.
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Nonlinear absorption in a GaAs waveguide is measured with photon energies near half the band-gap energy by employing single-beam and pump-probe attenuation techniques. Two-photon absorption followed by free-carrier absorption are the dominant nonlinear absorption mechanisms that are included in a model that fits the experimental data

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Quantum Electronics, IEEE Journal of  (Volume:30 ,  Issue: 5 )