http://www.cnr.it/ontology/cnr/individuo/prodotto/ID176029

Terahertz quantum-cascade lasers based on an interlaced photon-phonon cascade (Articolo in rivista)

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Label

Terahertz quantum-cascade lasers based on an interlaced photon-phonon cascade (Articolo in rivista) (literal)

Anno

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Alternative label

Rüdeger Köhler; Alessandro Tredicucci; Cosimo Mauro; Fabio Beltram; Harvey E. Beere; Edmund H. Linfield; A. Giles Davies;, David A. Ritchie (2004)
Terahertz quantum-cascade lasers based on an interlaced photon-phonon cascade
in Applied physics letters; American Institute of Physics, Melville [NY] (Stati Uniti d'America)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

Rüdeger Köhler; Alessandro Tredicucci; Cosimo Mauro; Fabio Beltram; Harvey E. Beere; Edmund H. Linfield; A. Giles Davies;, David A. Ritchie (literal)

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Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

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Note

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NEST-INFM and Scuola Normale Superiore, Piazza dei Cavalieri 7, 56126 Pisa, Italy; Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge CB3 0HE, United Kingdom (literal)

Titolo

Terahertz quantum-cascade lasers based on an interlaced photon-phonon cascade (literal)

Abstract

A THz (lambdasimilar to80 mum) quantum-cascade laser utilizing alternating photon- and phonon-emitting stages has been developed to achieve efficient extraction of electrons from the lower laser level. Thermal backfilling of electrons is drastically reduced leading to an operation up to 95 K and a weak temperature dependence of the power versus current slope efficiency. The threshold current density is 280 A cm(-2) at 6 K and increases to 580 A cm(-2) at 90 K. Peak output powers of 10 mW at 30 K and 4 mW at 80 K are obtained. (literal)

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