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Optical Materials Express

Optical Materials Express

  • Editor: David J. Hagan
  • Vol. 3, Iss. 10 — Oct. 1, 2013
  • pp: 1624–1631

Interband cascade lasers with AlGaAsSb bulk cladding layers

Robert Weih, Adam Bauer, Martin Kamp, and Sven Höfling  »View Author Affiliations

Optical Materials Express, Vol. 3, Issue 10, pp. 1624-1631 (2013)

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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/cm2 and narrow ridges operated up to 45 °C in continuous wave mode.

© 2013 OSA

OCIS Codes
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(140.5960) Lasers and laser optics : Semiconductor lasers
(160.6000) Materials : Semiconductor materials
(250.0250) Optoelectronics : Optoelectronics
(140.5965) Lasers and laser optics : Semiconductor lasers, quantum cascade
(250.5960) Optoelectronics : Semiconductor lasers

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Original Manuscript: July 9, 2013
Revised Manuscript: August 25, 2013
Manuscript Accepted: August 26, 2013
Published: September 6, 2013

Virtual Issues
Mid-IR Photonic Materials (2013) Optical Materials Express

Robert Weih, Adam Bauer, Martin Kamp, and Sven Höfling, "Interband cascade lasers with AlGaAsSb bulk cladding layers," Opt. Mater. Express 3, 1624-1631 (2013)

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