Interband cascade lasers with AlGaAsSb bulk cladding layers

Robert Weih*, Adam Bauer, Martin Kamp, Sven Höfling

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)


Interband cascade lasers are promising candidates to cover a wide spectral range in the mid infrared spectral region with high performance devices. In this paper, we report on lasers where the cladding layers consist of quaternary bulk material (AlGaAsSb) instead of InAs/AlSb superlattices. The bulk claddings provide efficient mode confinement due to their low refractive index, comparable heat conductivity and a reduced current spreading. Broad area devices fabricated from laser layers with 5 cascades showed threshold current densities of 220 A/cm(2) and narrow ridges operated up to 45 degrees C in continuous wave mode. (C) 2013 Optical Society of America

Original languageEnglish
Pages (from-to)1624-1631
Number of pages8
JournalOptical Materials Express
Issue number10
Publication statusPublished - 1 Oct 2013




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