Interband cascade lasers with room temperature threshold current densities below 100 A/cm(2)

Robert Weih; Martin Kamp; Sven Höfling

doi:10.1063/1.4811133

Interband cascade lasers with room temperature threshold current densities below 100 A/cm(2)

Robert Weih^*, Martin Kamp, Sven Höfling

^*Corresponding author for this work

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

Abstract

Interband Cascade Lasers (ICLs) with threshold current densities below 100 A/cm(2) in pulsed operation at room temperature are presented. The laser structure comprises 10 active stages of 41 nm length, each stage containing a W-quantum well active region for emission in the spectral region around 3.6 mu m. A comparison of devices with 6 and 10 stages shows that the latter have a reduced threshold due to an increased optical confinement factor, very competitive threshold power densities of 428 W cm(-2) despite an increased threshold voltage and large differential slope efficiencies of 1390 mW/A. For a narrow ridge device, continuous wave operation is observed up to 65 degrees C.

Original language	English
Article number	231123
Number of pages	4
Journal	Applied Physics Letters
Volume	102
Issue number	23
DOIs	https://doi.org/10.1063/1.4811133
Publication status	Published - 10 Jun 2013

Keywords

Current density
Laser modes
Interband Cascade Lasers (ICLs)

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10.1063/1.4811133

1.4811133
Copyright 2013, American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Applied Physics Letters and may be found at http://scitation.aip.org/content/aip/journal/apl/102/23/10.1063/1.4811133
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title = "Interband cascade lasers with room temperature threshold current densities below 100 A/cm(2)",

abstract = "Interband Cascade Lasers (ICLs) with threshold current densities below 100 A/cm(2) in pulsed operation at room temperature are presented. The laser structure comprises 10 active stages of 41 nm length, each stage containing a W-quantum well active region for emission in the spectral region around 3.6 mu m. A comparison of devices with 6 and 10 stages shows that the latter have a reduced threshold due to an increased optical confinement factor, very competitive threshold power densities of 428 W cm(-2) despite an increased threshold voltage and large differential slope efficiencies of 1390 mW/A. For a narrow ridge device, continuous wave operation is observed up to 65 degrees C.",

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T1 - Interband cascade lasers with room temperature threshold current densities below 100 A/cm(2)

AU - Weih, Robert

AU - Kamp, Martin

AU - Höfling, Sven

PY - 2013/6/10

Y1 - 2013/6/10

N2 - Interband Cascade Lasers (ICLs) with threshold current densities below 100 A/cm(2) in pulsed operation at room temperature are presented. The laser structure comprises 10 active stages of 41 nm length, each stage containing a W-quantum well active region for emission in the spectral region around 3.6 mu m. A comparison of devices with 6 and 10 stages shows that the latter have a reduced threshold due to an increased optical confinement factor, very competitive threshold power densities of 428 W cm(-2) despite an increased threshold voltage and large differential slope efficiencies of 1390 mW/A. For a narrow ridge device, continuous wave operation is observed up to 65 degrees C.

AB - Interband Cascade Lasers (ICLs) with threshold current densities below 100 A/cm(2) in pulsed operation at room temperature are presented. The laser structure comprises 10 active stages of 41 nm length, each stage containing a W-quantum well active region for emission in the spectral region around 3.6 mu m. A comparison of devices with 6 and 10 stages shows that the latter have a reduced threshold due to an increased optical confinement factor, very competitive threshold power densities of 428 W cm(-2) despite an increased threshold voltage and large differential slope efficiencies of 1390 mW/A. For a narrow ridge device, continuous wave operation is observed up to 65 degrees C.

KW - Current density

KW - Laser modes

KW - Interband Cascade Lasers (ICLs)

U2 - 10.1063/1.4811133

DO - 10.1063/1.4811133

M3 - Article

SN - 0003-6951

VL - 102

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 23

M1 - 231123

ER -

Interband cascade lasers with room temperature threshold current densities below 100 A/cm(2)

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Keywords

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