Finite element characterisation of terahertz quantum cascade laser waveguides

H. Tanvir; B. M. A. Rahman; C. Themistos; N. Kejalakshmy; T. Chattppaddhaye; K. T. V. Grattan

doi:10.1117/12.807930

17 February 2009 Finite element characterisation of terahertz quantum cascade laser waveguides

H. Tanvir, B. M. A. Rahman, C. Themistos, N. Kejalakshmy, T. Chattppaddhaye, K. T. V. Grattan

Proceedings Volume 7215, Terahertz Technology and Applications II; 72150M (2009) https://doi.org/10.1117/12.807930
Event: SPIE OPTO: Integrated Optoelectronic Devices, 2009, San Jose, California, United States

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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