Interband cascade lasers with AlGaAsSb bulk cladding layers

Robert Weih; Adam Bauer; Martin Kamp; Sven Höfling

doi:10.1364/OME.3.001624

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 journal › Article › peer-review

29 Citations (Scopus)

Abstract

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 language	English
Pages (from-to)	1624-1631
Number of pages	8
Journal	Optical Materials Express
Volume	3
Issue number	10
DOIs	https://doi.org/10.1364/OME.3.001624
Publication status	Published - 1 Oct 2013

Keywords

QUANTUM-WELL LASERS

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10.1364/OME.3.001624

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AU - Bauer, Adam

AU - Kamp, Martin

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N2 - 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

AB - 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

KW - QUANTUM-WELL LASERS

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Interband cascade lasers with AlGaAsSb bulk cladding layers

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Keywords

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