Multiwatt long wavelength quantum cascade lasers based on high strain composition with 70% injection efficiency

Arkadiy Lyakh; Richard Maulini; Alexei G. Tsekoun; Rowel Go; C. Kumar N. Patel

doi:10.1117/12.2000423

4 March 2013 Multiwatt long wavelength quantum cascade lasers based on high strain composition with 70% injection efficiency

Arkadiy Lyakh, Richard Maulini, Alexei G. Tsekoun, Rowel Go, C. Kumar N. Patel

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Proceedings Volume 8640, Novel In-Plane Semiconductor Lasers XII; 864019 (2013) https://doi.org/10.1117/12.2000423
Event: SPIE OPTO, 2013, San Francisco, California, United States

Abstract

A strain-balanced, AlInAs/InGaAs/InP quantum cascade laser structure, designed for light emission near 9μm, was grown by molecular beam epitaxy. Laser devices were processed in buried heterostructure geometry. Maximum pulsed and continuous wave room temperature optical power of 4.5 and 2W and wallplug efficiency of 16% and 10%, respectively, were demonstrated for a 3mm by 10μm laser mounted epi-side down on an AlN/SiC composite submount. Pulsed laser characteristics were shown to be self-consistently described by a simple model based on rate equations using measured 70% injection efficiency for the upper laser level.

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Arkadiy Lyakh, Richard Maulini, Alexei G. Tsekoun, Rowel Go, and C. Kumar N. Patel "Multiwatt long wavelength quantum cascade lasers based on high strain composition with 70% injection efficiency", Proc. SPIE 8640, Novel In-Plane Semiconductor Lasers XII, 864019 (4 March 2013); https://doi.org/10.1117/12.2000423

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KEYWORDS

Quantum cascade lasers

Electroluminescence

Pulsed laser operation

Long wavelength infrared

Waveguides

Mid-IR

Transparency

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