15 October 2012 Temperature analysis and effects on SQW PbSe/PbSrSe energy levels, modal gain, and current density
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Abstract
Temperature dependence is a key parameter in designing quantum well lasers. In this work, we calculated the effects of temperature on the energy levels and emitted wavelength for PbSe/PbSrSe Single Quantum Well Laser at four different temperatures: 77K, 150K, 200K, 250K, and 300K. This material system is currently being used in Tunable Laser Spectroscopy which plays a key role in detecting biomarker molecules in exhaled breath at wavelengths in the infrared region. We determined the system design parameters to obtain the desired emitted wavelengths associated with certain disease biomarkers as a function of temperature. Our calculated emitted wave lengths are in excellent agreement with experimental data assuming parabolic and nonparabolic energy band structures. Moreover, we calculated the effects of temperature on the confinement factor, gain and current density. The modal gain versus current density curved showed that the nominal current density and the saturation level increases with temperature similar to other material systems.
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M. Khodr, M. Khodr, } "Temperature analysis and effects on SQW PbSe/PbSrSe energy levels, modal gain, and current density", Proc. SPIE 8463, Nanoengineering: Fabrication, Properties, Optics, and Devices IX, 84630M (15 October 2012); doi: 10.1117/12.923766; https://doi.org/10.1117/12.923766
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