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1 PublicationTerahertz two-photon quantum well infrared photodetector
Schneider, H.; Liu, H. C.; Winnerl, S.; Song, C. Y.; Walther, M.; Helm, M.
Abstract
A two-photon detector based on intersubband transitions in GaAs/AlGaAs quantum wells operating in the Terahertz regime below the Reststrahlenband is reported. Resonantly enhanced optical nonlinearities enables sensitive quadratic detection at pJ pulse energies. We demonstrate its use in a quadratic autocorrelator for far-infrared picosecond pulses at around 7 THz.
Keywords: Quantum well infrared photodetector; two-photon intersubband transition; GaAs/AlGaAs quantum well; quadratic autocorrelation
Involved research facilities
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Optics Express 17(2009), 12279-12284
DOI: 10.1364/OE.17.012279
Cited 24 times in Scopus
Permalink: https://www.hzdr.de/publications/Publ-12501
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