Current-induced heating in quantum well and quantum wire intersubband emitter structures
| Autor: | Matthias Reinwald, Werner Wegscheider, Thomas Herrle, Stephan Haneder, Hans-Peter Tranitz |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Materials science
Physics and Astronomy (miscellaneous) Condensed matter physics Quantum heterostructure business.industry Quantum wire Quantum point contact 530 Physik Condensed Matter::Mesoscopic Systems and Quantum Hall Effect law.invention Condensed Matter::Materials Science 73.63.Hs 73.63.Kv 78.67.De 78.67.Hc 78.55.Cr aluminium compounds gallium arsenide III-V semiconductors photoluminescence semiconductor quantum wells semiconductor quantum wires Quantum dot laser law Quantum dot Electro-absorption modulator Optoelectronics business Quantum cascade laser Quantum well |
| Zdroj: | Applied Physics Letters. 91:201105 |
| ISSN: | 1077-3118 0003-6951 |
| Popis: | We discuss the influence of current-induced heating on the current-voltage (I-V) characteristics and the spectral behavior in quantum well and quantum wire intersubband emitter structures. A conventional quantum cascade laser structure in the AlGaAs/GaAs material system with undoped cladding layers and an undoped active region is examined. This heterostructure serves as a first growth step for quantum wire intersubband emitters fabricated by the cleaved-edge overgrowth technique. We discuss the influence of electrons supplied by a remote delta-silicon doping. Duty-cycle dependent measurements on the quantum wire structures confirm the influence of current-induced heating on the I-V characteristics as well as on the emission spectra. |
| Databáze: | OpenAIRE |
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