High-performance injectorless quantum cascade lasers emitting below 6 μm

Simeon Katz; Augustinas Vizbaras; Gerhard Boehm; Markus Christian Amann

doi:10.1063/1.3119184

High-performance injectorless quantum cascade lasers emitting below 6 μm

Simeon Katz, Augustinas Vizbaras, Gerhard Boehm, Markus Christian Amann

Chair of Semiconductor Technology

Walter Schottky Institut

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

21 Scopus citations

Abstract

An injectorless quantum cascade laser emitting around 5.7 μm with more than 1 W of output power and a wall-plug efficiency of 3.6% at room temperature in pulsed operation is presented. The active region of the device is a design that picked up the idea of the four-alloy structure, which has already lead to very low threshold current densities. The pulsed threshold current densities were measured as low as 1.1 kA/ cm² at room temperature for an as-cleaved 3.6 mm long device, and 0.93 kA/ cm² for a high-reflection-coated 4 mm long device.

Original language	English
Article number	151106
Journal	Applied Physics Letters
Volume	94
Issue number	15
DOIs	https://doi.org/10.1063/1.3119184
State	Published - 2009

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abstract = "An injectorless quantum cascade laser emitting around 5.7 μm with more than 1 W of output power and a wall-plug efficiency of 3.6% at room temperature in pulsed operation is presented. The active region of the device is a design that picked up the idea of the four-alloy structure, which has already lead to very low threshold current densities. The pulsed threshold current densities were measured as low as 1.1 kA/ cm2 at room temperature for an as-cleaved 3.6 mm long device, and 0.93 kA/ cm2 for a high-reflection-coated 4 mm long device.",

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AU - Vizbaras, Augustinas

AU - Boehm, Gerhard

AU - Amann, Markus Christian

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AB - An injectorless quantum cascade laser emitting around 5.7 μm with more than 1 W of output power and a wall-plug efficiency of 3.6% at room temperature in pulsed operation is presented. The active region of the device is a design that picked up the idea of the four-alloy structure, which has already lead to very low threshold current densities. The pulsed threshold current densities were measured as low as 1.1 kA/ cm2 at room temperature for an as-cleaved 3.6 mm long device, and 0.93 kA/ cm2 for a high-reflection-coated 4 mm long device.

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High-performance injectorless quantum cascade lasers emitting below 6 μm

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