Carrier dynamics of type-II InAsSb/GaAsSb W-quantum wells emitting in mid-infrared

Tristan Smołka; Michał Rygała; Krzysztof Ryczko; Andreas Bader; Fabian Hartmann; Borislav Petrovic; Sven Höfling; Marcin Motyka

doi:10.1117/12.3001654

13 March 2024 Carrier dynamics of type-II InAsSb/GaAsSb W-quantum wells emitting in mid-infrared

Tristan Smołka, Michał Rygała, Krzysztof Ryczko, Andreas Bader, Fabian Hartmann, Borislav Petrovic, Sven Höfling, Marcin Motyka

Author Affiliations +

Proceedings Volume 12906, Light-Emitting Devices, Materials, and Applications XXVIII; 129060Q (2024) https://doi.org/10.1117/12.3001654
Event: SPIE OPTO, 2024, San Francisco, California, United States

Conference Poster

Abstract

Interband cascade lasers (ICLs) are highly efficient semiconductor lasers operating in the mid-infrared range. Their cascade structure of multiple quantum wells enables continuous operation at room temperature with low threshold current. This study explores the impact of tensile and compressive strain on W-QWs' electronic structure and carrier dynamics. Using transient absorption measurements on specific material structures, researchers investigated carrier lifetimes and fundamental transitions. Photoreflectance and photoluminescence measurements were also employed to study band structure and optical properties. The findings provide insights into optimizing ICL performance, improving their performance in application for gas sensing, spectroscopy, medical diagnostics, and communication.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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Tristan Smołka, Michał Rygała, Krzysztof Ryczko, Andreas Bader, Fabian Hartmann, Borislav Petrovic, Sven Höfling, and Marcin Motyka "Carrier dynamics of type-II InAsSb/GaAsSb W-quantum wells emitting in mid-infrared", Proc. SPIE 12906, Light-Emitting Devices, Materials, and Applications XXVIII, 129060Q (13 March 2024); https://doi.org/10.1117/12.3001654

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