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  • 2000-2004  (3)
  • 2002  (3)
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  • 2000-2004  (3)
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  • 1
    Electronic Resource
    Electronic Resource
    High-gain coupled InGaAs quantum well InAs quantum dot AlGaAs–GaAs–InGaAs–InAs heterostructure diode laser operation (2002)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 80 (2002), S. 1126-1128 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Data are presented showing that a single-layer InAs quantum dot (QD) laser in the AlGaAs–GaAs–InGaAs–InAs heterostructure system is improved in gain and continuous wave (cw) room temperature operation by coupling, via tunneling, auxiliary strained-layer InGaAs quantum wells (QWs) to the single InAs QD layer to assist carrier collection and thermalization. A QW-assisted single-layer InAs QD laser, a QD+QW laser, is demonstrated that operates cw (300 K), and at diode length 150 μm in pulsed operation exhibits gain as high as ∼100 cm−1. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1451989
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Coupled-stripe quantum-well-assisted AlGaAs–GaAs–InGaAs–InAs quantum-dot laser (2002)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 80 (2002), S. 3045-3047 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Data are presented on the coupled-stripe laser operation (continuous wave, 300 K) of a single InAs quantum-dot (QD) layer coupled via a thin (5 Å) GaAs barrier to an auxiliary strained InGaAs quantum well (QW) grown (confined) in an AlGaAs–GaAs heterostructure. Because of strain-induced (QW strain) improvement of the QD growth and QD alignment along diagonal (reflecting) ridges, the InGaAs-QW+InAs-QD crystals exhibit high gain along and across laser stripes, which is advantageous for coupled-stripe laser operation. A twin-stripe single-QD-layer QW+QD laser (4 μm stripes on 6 μm centers) of usual cleaved length, 〈 500 μm, is capable of continuous 300 K operation, with only probe heat-sink clamping and testing, at 〉50 mW. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1473686
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Prejudice Toward People With Cancer or AIDS: Applying the Integrated Threat Model (2002)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of applied biobehavioral research 7 (2002), S. 0 
    Details
    ISSN: 1751-9861
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Psychology
    Notes: Two experiments applied the integrated threat theory of prejudice to predicting attitudes toward people with terminal cancer or AIDS. The measures, which were designed to assess the components of the model (realistic threats, symbolic threats, inter group anxiety, and negative stereotypes), were reliable and generally predictive of attitudes. The theory predicted attitudes toward AIDS better than attitudes toward cancer, perhaps because more people believe that they are likely to become a member of the cancer out-group. The benefits of applying social psychological theory to health issues are discussed along with suggestions for future research.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1751-9861.2002.tb00078.x
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    Paper (German National Licenses)
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