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Terahertz intersubband emission in strong magnetic fields

Blaser, Stéphane ; Rochat, Michel ; Beck, Mattias ; Hofstetter, Daniel ; Faist, Jérôme

In: Applied Physics Letters, 2002, vol. 81, p. 67-69

Electroluminescence in quantum-cascade structures based on vertical transitions is studied in a strong perpendicular magnetic field in the limit in which the cyclotron energy is larger than the intersubband transition energy. Cyclotron emission and a luminescence intensity enhancement up to a factor of 6 is observed in GaAs/AlGaAs and InGaAs/InAlAs vertical transition-based quantum-cascade... More

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    Title
    • Terahertz intersubband emission in strong magnetic fields
    Author
    • Blaser, Stéphane. Institut de Physique, Université de Neuchâtel, Switzerland
    • Rochat, Michel. Institut de Physique, Université de Neuchâtel, Switzerland
    • Beck, Mattias. Institut de Physique, Université de Neuchâtel, Switzerland
    • Hofstetter, Daniel. Institut de Physique, Université de Neuchâtel, Switzerland
    • Faist, Jérôme. Institut de Physique, Université de Neuchâtel, Switzerland
    Document Type
    • Postprint
    Publication Date
    • 2002
    Language
    • English
    Published in
    • Applied Physics Letters, 2002, vol. 81, p. 67-69. American Institute of Physics (AIP)
    Other Version
    Classification
    • Physics
    OAI-PMH Identifier
    • oai:doc.rero.ch:20080430081746-QY
    Submission No.
    • 20080430081746-QY
    Summary
    Electroluminescence in quantum-cascade structures based on vertical transitions is studied in a strong perpendicular magnetic field in the limit in which the cyclotron energy is larger than the intersubband transition energy. Cyclotron emission and a luminescence intensity enhancement up to a factor of 6 is observed in GaAs/AlGaAs and InGaAs/InAlAs vertical transition-based quantum-cascade structures.