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Detail publikace
Kainz, MA. Schonhuber, S. Limbacher, B. Andrews, AM. Detz, H. Strasser, G. Bastard, G. Unterrainer, K.
Originální název
Color switching of a terahertz quantum cascade laser
Typ
článek v časopise ve Web of Science, Jimp
Jazyk
angličtina
Originální abstrakt
The mode formation of a terahertz Quantum Cascade laser with two optical transitions is studied experimentally. The emission spectrum shows two well separated frequency regions at 3.4 THz and 3.8 THz corresponding to two different upper laser states j3i and j4i. From the relative strength of the two colors, population and electron scattering effects for the two states are investigated at different operating temperatures and in the presence of a strong magnetic field. At elevated temperatures, the population of state j3i is continuously reduced, resulting in only the 3.8 THz transition lasing at 140 K. For an applied magnetic field, the elastic scattering channel from j4i ! j3i is progressively suppressed, resulting in laser emission switching from 3.4 THz to 3.8 THz.
Klíčová slova
Quantum Cascade laser
Autoři
Kainz, MA.; Schonhuber, S.; Limbacher, B.; Andrews, AM.; Detz, H.; Strasser, G.; Bastard, G.; Unterrainer, K.
Vydáno
13. 5. 2019
ISSN
0003-6951
Periodikum
Applied Physics Letters
Ročník
114
Číslo
19
Stát
Spojené státy americké
Strany od
119104
Strany do
Strany počet
5
URL
https://aip.scitation.org/doi/10.1063/1.5093901
BibTex
@article{BUT159147, author="Kainz, MA. and Schonhuber, S. and Limbacher, B. and Andrews, AM. and Detz, H. and Strasser, G. and Bastard, G. and Unterrainer, K.", title="Color switching of a terahertz quantum cascade laser", journal="Applied Physics Letters", year="2019", volume="114", number="19", pages="119104--119104", doi="10.1063/1.5093901", issn="0003-6951", url="https://aip.scitation.org/doi/10.1063/1.5093901" }