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17 February 2009 Finite element characterisation of terahertz quantum cascade laser waveguides
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Abstract
Compact Quantum Cascade Laser waveguides have been analyzed using the full-vectorial finite element method. Modal intensity profiles, detailed power confinements and loss factors have been characterized for waveguides based on GaSb/AlGaSb multiple quantum well structures. Variations in these key parameters were also further investigated whilst varying the semiconductor doping concentration. Higher order modes having a low propagation loss were also shown.
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H. Tanvir, B. M. A. Rahman, C. Themistos, N. Kejalakshmy, T. Chattppaddhaye, and K. T. V. Grattan "Finite element characterisation of terahertz quantum cascade laser waveguides", Proc. SPIE 7215, Terahertz Technology and Applications II, 72150M (17 February 2009); https://doi.org/10.1117/12.807930
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