Degenerate four-wave mixing experiments on GaN in the quasistationary regime
Haag, H. ; Gilliot, P. ; Lévy, R. ; Hönerlage, B.
Woodbury, NY : American Institute of Physics (AIP)
Published 1999
Woodbury, NY : American Institute of Physics (AIP)
Published 1999
| ISSN: |
1077-3118
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|---|---|
| Source: |
AIP Digital Archive
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| Topics: |
Physics
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| Notes: |
In order to determine the third order of the nonlinear susceptibility χ(3) of GaN, we perform degenerate four-wave mixing measurements in a two-beam configuration at low temperature on a GaN epilayer on sapphire substrate. We measure the excitation spectrum of χ(3) close to the exciton resonances. Besides the χ(3) contribution, higher orders of the nonlinear susceptibility show already up around 10 kW cm−2, leading to a saturation of the signal. Results are complemented by a study of the influence of a band-to-band excitation ((h-dash-bar)ωP=4.02 eV) on the nonlinear susceptibility. © 1999 American Institute of Physics.
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| Type of Medium: |
Electronic Resource
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| URL: |