Double-waveguide interband cascade laser with dual wavelength emission

Robert Weih; Julian Scheuermann; Martin Kamp; Johannes Koeth; Sven Höfling

doi:10.1063/1.5079521

Double-waveguide interband cascade laser with dual wavelength emission

Robert Weih, Julian Scheuermann, Martin Kamp, Johannes Koeth, Sven Höfling

Research output: Contribution to journal › Article › peer-review

Abstract

Interband cascade lasers (ICLs) with dual wavelength emission have been realized by utilizing two spatially separated active regions in the same device. The two wavelengths (3.1 and 3.7 µm) were chosen in order to demonstrate that the usual spectral gain bandwidth of an ICL can be overcome. At 20°C, threshold current densities as low as 215 A/cm² (short wavelength) and 158 A/cm² (long wavelength) could be achieved in pulsed mode. It was possible for an epi-up mounted device to maintain dual-wavelength continuous-wave emission up to 0°C. Despite the longer wavelength emission being suppressed at higher temperatures, the shorter wavelength maintained an output power of more than 10 mW at 15°C.

Original language	English
Article number	251105
Journal	Applied Physics Letters
Volume	113
Issue number	25
DOIs	https://doi.org/10.1063/1.5079521
Publication status	Published - 17 Dec 2018

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Copyright © 2018, the Author(s). This work has been made available online in accordance with the publisher's policies. This is the author created accepted version manuscript following peer review and as such may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1063/1.5079521
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title = "Double-waveguide interband cascade laser with dual wavelength emission",

abstract = "Interband cascade lasers (ICLs) with dual wavelength emission have been realized by utilizing two spatially separated active regions in the same device. The two wavelengths (3.1 and 3.7 µm) were chosen in order to demonstrate that the usual spectral gain bandwidth of an ICL can be overcome. At 20°C, threshold current densities as low as 215 A/cm² (short wavelength) and 158 A/cm² (long wavelength) could be achieved in pulsed mode. It was possible for an epi-up mounted device to maintain dual-wavelength continuous-wave emission up to 0°C. Despite the longer wavelength emission being suppressed at higher temperatures, the shorter wavelength maintained an output power of more than 10 mW at 15°C.",

author = "Robert Weih and Julian Scheuermann and Martin Kamp and Johannes Koeth and Sven H{\"o}fling",

note = "We are grateful for receiving financial support within the BMBF Project “LASELO” (FKZ: 13N13773).",

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doi = "10.1063/1.5079521",

language = "English",

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T1 - Double-waveguide interband cascade laser with dual wavelength emission

AU - Weih, Robert

AU - Scheuermann, Julian

AU - Kamp, Martin

AU - Koeth, Johannes

AU - Höfling, Sven

N1 - We are grateful for receiving financial support within the BMBF Project “LASELO” (FKZ: 13N13773).

PY - 2018/12/17

Y1 - 2018/12/17

N2 - Interband cascade lasers (ICLs) with dual wavelength emission have been realized by utilizing two spatially separated active regions in the same device. The two wavelengths (3.1 and 3.7 µm) were chosen in order to demonstrate that the usual spectral gain bandwidth of an ICL can be overcome. At 20°C, threshold current densities as low as 215 A/cm² (short wavelength) and 158 A/cm² (long wavelength) could be achieved in pulsed mode. It was possible for an epi-up mounted device to maintain dual-wavelength continuous-wave emission up to 0°C. Despite the longer wavelength emission being suppressed at higher temperatures, the shorter wavelength maintained an output power of more than 10 mW at 15°C.

AB - Interband cascade lasers (ICLs) with dual wavelength emission have been realized by utilizing two spatially separated active regions in the same device. The two wavelengths (3.1 and 3.7 µm) were chosen in order to demonstrate that the usual spectral gain bandwidth of an ICL can be overcome. At 20°C, threshold current densities as low as 215 A/cm² (short wavelength) and 158 A/cm² (long wavelength) could be achieved in pulsed mode. It was possible for an epi-up mounted device to maintain dual-wavelength continuous-wave emission up to 0°C. Despite the longer wavelength emission being suppressed at higher temperatures, the shorter wavelength maintained an output power of more than 10 mW at 15°C.

U2 - 10.1063/1.5079521

DO - 10.1063/1.5079521

M3 - Article

SN - 0003-6951

VL - 113

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 25

M1 - 251105

ER -

Double-waveguide interband cascade laser with dual wavelength emission

Abstract

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