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Wavelength Shift of InP-Based InAs Quantum Dot Lasers Above Room Temperature

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Abstract:

For the InAs quantum dot (QD) lasers based on the InAlGaAs-InAlAs-InP material system, the lasing operation was successfully achieved up to 100 °C. The lasing wavelength was linearly increased with a slope of 0.100 nm/K up to 50 °C and then, decreased with (−)0.419 nm/K above 50 °C. The temperature-induced shift in the lasing wavelength can be attributed to both the band-gap shrinkage and the band-filling effect of carriers, which was well agreed with the characteristic temperatures of the InAs QD laser calculated from the temperature dependence of threshold current density.

Keywords: III-V SEMICONDUCTOR; LASER; QUANTUM DOT; WAVELENGTH SHIFT

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2007.878

Publication date: December 1, 2007

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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