Infrared modulated interlevel spectroscopy of 1.3 μm self-assembled quantum dot lasers using a free electron laser

I. R. Sellers; D. J. Mowbray; T. J. Badcock; J. P.R. Wells; P. J. Phillips; D. A. Carder; H. Y. Liu; K. M. Groom; M. Hopkinson

doi:10.1063/1.2177656

Infrared modulated interlevel spectroscopy of 1.3 μm self-assembled quantum dot lasers using a free electron laser

I. R. Sellers
, D. J. Mowbray
, T. J. Badcock
, J. P.R. Wells
, P. J. Phillips
, D. A. Carder
, H. Y. Liu
, K. M. Groom
, M. Hopkinson

Department of Electrical Engineering

University of Sheffield
FOM Institute Rijnhuizen
University of Dundee
University of Canterbury

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

A modulated far-IR technique is applied to determine the separations of the confined electron and hole states in a 1.3 μm emitting self-assembled quantum-dot laser. By utilizing the unusual temperature behavior of the threshold current density, which exhibits a minimum at ∼200 K, it is possible to eliminate heating effects associated with the far-IR pulses. In addition, the intense monochromatic laser output results in a relatively strong modulated signal strength. Electron and hole quantization energies of 46.7±0.2 and 13±1 meV, respectively, are determined.

Original language	English
Article number	081108
Journal	Applied Physics Letters
Volume	88
Issue number	8
DOIs	https://doi.org/10.1063/1.2177656
State	Published - 2006

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@article{8933b1896329426b855a8ba14059bdef,

title = "Infrared modulated interlevel spectroscopy of 1.3 μm self-assembled quantum dot lasers using a free electron laser",

abstract = "A modulated far-IR technique is applied to determine the separations of the confined electron and hole states in a 1.3 μm emitting self-assembled quantum-dot laser. By utilizing the unusual temperature behavior of the threshold current density, which exhibits a minimum at ∼200 K, it is possible to eliminate heating effects associated with the far-IR pulses. In addition, the intense monochromatic laser output results in a relatively strong modulated signal strength. Electron and hole quantization energies of 46.7±0.2 and 13±1 meV, respectively, are determined.",

author = "Sellers, \{I. R.\} and Mowbray, \{D. J.\} and Badcock, \{T. J.\} and Wells, \{J. P.R.\} and Phillips, \{P. J.\} and Carder, \{D. A.\} and Liu, \{H. Y.\} and Groom, \{K. M.\} and M. Hopkinson",

year = "2006",

doi = "10.1063/1.2177656",

language = "English",

volume = "88",

journal = "Applied Physics Letters",

issn = "0003-6951",

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T1 - Infrared modulated interlevel spectroscopy of 1.3 μm self-assembled quantum dot lasers using a free electron laser

AU - Sellers, I. R.

AU - Mowbray, D. J.

AU - Badcock, T. J.

AU - Wells, J. P.R.

AU - Phillips, P. J.

AU - Carder, D. A.

AU - Liu, H. Y.

AU - Groom, K. M.

AU - Hopkinson, M.

PY - 2006

Y1 - 2006

N2 - A modulated far-IR technique is applied to determine the separations of the confined electron and hole states in a 1.3 μm emitting self-assembled quantum-dot laser. By utilizing the unusual temperature behavior of the threshold current density, which exhibits a minimum at ∼200 K, it is possible to eliminate heating effects associated with the far-IR pulses. In addition, the intense monochromatic laser output results in a relatively strong modulated signal strength. Electron and hole quantization energies of 46.7±0.2 and 13±1 meV, respectively, are determined.

AB - A modulated far-IR technique is applied to determine the separations of the confined electron and hole states in a 1.3 μm emitting self-assembled quantum-dot laser. By utilizing the unusual temperature behavior of the threshold current density, which exhibits a minimum at ∼200 K, it is possible to eliminate heating effects associated with the far-IR pulses. In addition, the intense monochromatic laser output results in a relatively strong modulated signal strength. Electron and hole quantization energies of 46.7±0.2 and 13±1 meV, respectively, are determined.

UR - https://www.scopus.com/pages/publications/33644524078

U2 - 10.1063/1.2177656

DO - 10.1063/1.2177656

M3 - Article

AN - SCOPUS:33644524078

SN - 0003-6951

VL - 88

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 8

M1 - 081108

ER -

Infrared modulated interlevel spectroscopy of 1.3 μm self-assembled quantum dot lasers using a free electron laser

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