APL Nameplate
  • Volume/Page
  • Keyword
  • DOI
  • Citation
  • Advanced
   
 
 
 

Flickr Twitter UniPHY Group iResearch App Facebook

Applied Physics Letters / Volume 84 / Issue 8 / LASERS, OPTICS, AND OPTOELECTRONICS

Appl. Phys. Lett. 84, 1266 (2004); doi:10.1063/1.1650905 (3 pages)

Terahertz quantum-cascade lasers based on an interlaced photon-phonon cascade

Rüdeger Köhler1, Alessandro Tredicucci1, Cosimo Mauro1, Fabio Beltram1, Harvey E. Beere2, Edmund H. Linfield2, A. Giles Davies2, and David A. Ritchie2

1NEST-INFM and Scuola Normale Superiore, Piazza dei Cavalieri 7, 56126 Pisa, Italy
2Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge CB3 0HE, United Kingdom

(Received 29 August 2003; accepted 19 December 2003)

A THz (λ ∼ 80 μm) 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. © 2004 American Institute of Physics.

© 2004 American Institute of Physics

RELATED DATABASES

To view database links for this article, you need to log in.

KEYWORDS and PACS

Keywords

quantum cascade lasers, submillimetre wave lasers, surface phonons, polaritons

PACS

  • 42.60.By

    Design of specific laser systems

  • 71.36.+c

    Polaritons (including photon-phonon and photon-magnon interactions)

  • 73.20.Mf

    Collective excitations (including excitons, polarons, plasmons and other charge-density excitations)

ARTICLE DATA

Permalink
http://link.aip.org/link/doi/10.1063/1.1650905

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.
    For a recent review, see F. Capasso, C. Gmachl, D. L. Sivco, and A. Y Cho, Phys. Today 55, 34 (2002)PHTOAD000055000005000034000001
    and references therein.

    R. Köhler, A. Tredicucci, F. Beltram, H. E. Beere, E. H. Linfield, A. G. Davies, and D. A. Ritchie, Appl. Phys. Lett. 82, 1518 (2003)APPLAB000082000010001518000001.

    G. Scalari, L. Ajili, J. Faist, H. Beere, E. Linfield, D. Ritchie, and G. Davies, Appl. Phys. Lett. 82, 3165 (2003)APPLAB000082000019003165000001.

    B. S. Williams, H. Callebaut, S. Kumar, Q. Hu, and J. L. Reno, Appl. Phys. Lett. 82, 1015 (2003)APPLAB000082000007001015000001.

    A. Straub, T. S. Mosely, C. Gmachl, R. Colombelli, M. Troccoli, F. Capasso, D. L. Sivco, and A. Y. Cho, Appl. Phys. Lett. 80, 2845 (2003)APPLAB000080000016002845000001.


For access to citing articles, you need to log in.



Close

Google Calendar

ADVERTISEMENT

Your Recent History Recent History Help

Recently Viewed

  1. Terahertz quantum-cascade lasers based on an interlaced photon-phonon cascade
Go to AIP Home
Copyright © American Institute of Physics
close