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Applied Physics Letters / Volume 96 / Issue 22 / LASERS, OPTICS, AND OPTOELECTRONICS

Appl. Phys. Lett. 96, 221112 (2010); http://dx.doi.org/10.1063/1.3446968 (3 pages)

Upper limit for the modulation bandwidth of a quantum dot laser

Levon V. Asryan1 and Robert A. Suris2

1Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA
2Ioffe Physico-Technical Institute, Saint Petersburg 194021, Russia

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(Received 25 April 2010; accepted 17 May 2010; published online 4 June 2010)

We derive a closed-form expression for the upper limit for the modulation bandwidth of a semiconductor quantum dot (QD) laser. The highest possible bandwidth increases directly with overlap integral of the electron and hole wave functions in a QD, number of QD-layers, and surface density of QDs in a layer, and is inversely proportional to the inhomogeneous line broadening caused by the QD-size dispersion. At 10% QD-size fluctuations and 100% overlap, the upper limit for the modulation bandwidth in a single QD-layer laser can be as high as 60 GHz.

© 2010 American Institute of Physics

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KEYWORDS and PACS

Keywords

optical modulation, quantum dot lasers

PACS

  • 42.55.Px

    Semiconductor lasers; laser diodes

  • 42.60.By

    Design of specific laser systems

  • 42.60.Fc

    Modulation, tuning, and mode locking

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3446968

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.
    Y. Arakawa and H. Sakaki, Appl. Phys. Lett. 40, 939 (1982)APPLAB000040000011000939000001.

    P. G. Eliseev, H. Li, A. Stintz, G. T. Liu, T. C. Newell, K. J. Malloy, and L. F. Lester, Appl. Phys. Lett. 77, 262 (2000)APPLAB000077000002000262000001.

    S. Fathpour, Z. Mi, P. Bhattacharya, A. R. Kovsh, S. S. Mikhrin, I. L. Krestnikov, A. V. Kozhukhov, and N. N. Ledentsov, Appl. Phys. Lett. 85, 5164 (2004)APPLAB000085000022005164000001.

    L. V. Asryan, M. Grundmann, N. N. Ledentsov, O. Stier, R. A. Suris, and D. Bimberg, J. Appl. Phys. 90, 1666 (2001)JAPIAU000090000003001666000001.


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