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Third-harmonic generation in an AlGaAs/AlAs superlattice
Third-harmonic generation in an AlGaAs/AlAs superlattice is observed for the first time at a pump-light wavelength of around 2 μm. The value of third-order optical susceptibility χ(3), for the polarization parallel to the superlattice layer in a nonresonant region, is close to that reported for bulk...
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Published in: | Journal of applied physics 1989-06, Vol.65 (12), p.5202-5204 |
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Main Authors: | , , |
Format: | Article |
Language: | English |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | Third-harmonic generation in an AlGaAs/AlAs superlattice is observed for the first time at a pump-light wavelength of around 2 μm. The value of third-order optical susceptibility χ(3), for the polarization parallel to the superlattice layer in a nonresonant region, is close to that reported for bulk GaAs. Enhancement of χ(3), giving more than three times the nonresonant value, is observed near a three-photon resonance region. A characteristic third-harmonic signal is observed when the pump-light polarization has a component perpendicular to the superlattice layer. This is considered to be another χ(3) enhancement which is caused by nonparabolicity in the superlattice. |
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ISSN: | 0021-8979 1089-7550 |
DOI: | 10.1063/1.343152 |