Infrared-Phonon Polariton Resonance of the Nonlinear Susceptibility in GaAs


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DEKORSY, Thomas, Vladislav A. YAKOVLEV, Wolfgang SEIDEL, Manfred HELM, Fritz KEILMANN, 2003. Infrared-Phonon Polariton Resonance of the Nonlinear Susceptibility in GaAs. In: Physical review letters. 90(5), 55508

@article{Dekorsy2003Infra-5333, title={Infrared-Phonon Polariton Resonance of the Nonlinear Susceptibility in GaAs}, year={2003}, doi={10.1103/PhysRevLett.90.055508}, number={5}, volume={90}, journal={Physical review letters}, author={Dekorsy, Thomas and Yakovlev, Vladislav A. and Seidel, Wolfgang and Helm, Manfred and Keilmann, Fritz}, note={Article Number: 55508} }

<rdf:RDF xmlns:rdf="" xmlns:bibo="" xmlns:dc="" xmlns:dcterms="" xmlns:xsd="" > <rdf:Description rdf:about=""> <dc:creator>Yakovlev, Vladislav A.</dc:creator> <dcterms:available rdf:datatype="">2011-03-24T14:55:01Z</dcterms:available> <dcterms:bibliographicCitation>First publ. in: Physical review letters 90 (2003), 5, 055508</dcterms:bibliographicCitation> <dcterms:title>Infrared-Phonon Polariton Resonance of the Nonlinear Susceptibility in GaAs</dcterms:title> <dc:format>application/pdf</dc:format> <dc:contributor>Dekorsy, Thomas</dc:contributor> <dc:rights>deposit-license</dc:rights> <dcterms:abstract xml:lang="eng">Nonlinear probing of the fundamental lattice vibration of polar crystals is shown to reveal insight into higher-order cohesive lattice forces. With a free-electron laser tunable in the far infrared we experimentally investigate the dispersion of the second-order susceptibility due to the phonon resonance in GaAs. We observe a strong resonance enhancement of second harmonic light generation at half the optical phonon frequency, and in addition a minimum at a higher frequency below the phonon frequency. Measuring this frequency and comparison to a theoretical model allows the determination of competing higher-order lattice forces.</dcterms:abstract> <dc:creator>Helm, Manfred</dc:creator> <bibo:uri rdf:resource=""/> <dcterms:rights rdf:resource=""/> <dc:date rdf:datatype="">2011-03-24T14:55:01Z</dc:date> <dc:creator>Seidel, Wolfgang</dc:creator> <dc:contributor>Keilmann, Fritz</dc:contributor> <dc:contributor>Seidel, Wolfgang</dc:contributor> <dcterms:issued>2003</dcterms:issued> <dc:contributor>Yakovlev, Vladislav A.</dc:contributor> <dc:contributor>Helm, Manfred</dc:contributor> <dc:creator>Keilmann, Fritz</dc:creator> <dc:creator>Dekorsy, Thomas</dc:creator> <dc:language>eng</dc:language> </rdf:Description> </rdf:RDF>

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