Terahertz nonlinear optics using intra-excitonic quantum well transitions: Sideband generation and AC Stark splitting
We present experiments investigating nonlinear optics in the terahertz (THz) range related to the 1s–2p intra‐excitonic heavy‐hole transition in GaAs/AlGaAs multiquantum wells (MQWs). Driven by intense THz fields of the Dresden free‐electron laser the system exhibits two different phenomena: (i) we...
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Veröffentlicht in: | Physica Status Solidi (b) 2011-04, Vol.248 (4), p.859-862 |
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Hauptverfasser: | , , , , , , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | We present experiments investigating nonlinear optics in the terahertz (THz) range related to the 1s–2p intra‐excitonic heavy‐hole transition in GaAs/AlGaAs multiquantum wells (MQWs). Driven by intense THz fields of the Dresden free‐electron laser the system exhibits two different phenomena: (i) we observe efficient near‐infrared (NIR) sideband generation as a perturbative effect in the transmission of a narrowband NIR laser, and (ii) we present unambiguous evidence for the intra‐excitonic Autler–Townes splitting, a non‐perturbative effect. |
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ISSN: | 0370-1972 1521-3951 1521-3951 |
DOI: | 10.1002/pssb.201000832 |