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Applied Physics Letters / Volume 97 / Issue 8 / LASERS, OPTICS, AND OPTOELECTRONICS

Appl. Phys. Lett. 97, 081110 (2010); http://dx.doi.org/10.1063/1.3481698 (3 pages)

Magnetically assisted quantum cascade laser emitting from 740 GHz to 1.4 THz

Giacomo Scalari, Dana Turčinková, James Lloyd-Hughes, Maria I. Amanti, Milan Fischer, Mattias Beck, and Jérôme Faist

Institute of Quantum Electronics, ETH Zurich, Zurich 8093, Switzerland

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(Received 28 June 2010; accepted 2 August 2010; published online 25 August 2010)

In this paper we show that by applying a perpendicular magnetic field to a quantum cascade structure it is possible to enhance the gain of different optical transitions. The combination of magnetic confinement with a broadband, cutoff-free optical resonator allows the demonstration of laser action over a large bandwidth, from 733 GHz to 1.38 THz together with the emission at 3.2 THz. A different lasing scheme is revealed that does not rely on resonant tunneling as the main injection mechanism. In combination with the magnetically enhanced gain laser emission at 1 THz is observed up to a temperature of 115 K, which corresponds to a ratio kBT/hν = 2.3 between the lattice thermal energy and the laser photon energy.

© 2010 American Institute of Physics

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KEYWORDS and PACS

Keywords

laser cavity resonators, magneto-optical effects, quantum cascade lasers

PACS

  • 42.55.Px

    Semiconductor lasers; laser diodes

  • 42.60.By

    Design of specific laser systems

  • 42.60.Da

    Resonators, cavities, amplifiers, arrays, and rings

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3481698

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
    A. Leuliet, A. Vasanelli, A. Wade, G. Fedorov, D. Smirnov, G. Bastard, and C. Sirtori, Phys. Rev. B 73, 085311 (2006).

    G. Scalari, C. Walther, L. Sirigu, M. Sadowski, H. Beere, D. Ritchie, N. Hoyler, M. Giovannini, and J. Faist, Phys. Rev. B 76, 115305 (2007).

    G. Scalari, M. Amanti, M. Fischer, R. Terazzi, C. Walther, M. Beck, and J. Faist, Appl. Phys. Lett. 94, 041114 (2009)APPLAB000094000004041114000001.

    G. Scalari, S. Blaser, L. Ajili, J. Faist, H. Beere, E. Linfield, D. Ritchie, and G. Davies, Appl. Phys. Lett. 83, 3453 (2003)APPLAB000083000017003453000001.

    S. Lee and A. Wacker, Appl. Phys. Lett. 83, 2506 (2003)APPLAB000083000013002506000001.

    S. Kohen, B. Williams, and Q. Hu, J. Appl. Phys. 97, 053106 (2005)JAPIAU000097000005053106000001.

    N. Péré-Laperne, L. A. de Vaulchier, Y. Guldner, G. Bastard, G. Scalari, M. Giovannini, J. Faist, A. Vasanelli, S. Dhillon, and C. Sirtori, Appl. Phys. Lett. 91, 062102 (2007)APPLAB000091000006062102000001.


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