Progress in high-performance quantum cascade lasers

Arkadiy A. Lyakh; Richard Maulini; Alexei G. Tsekoun; Chandra Kumar N. Patel

doi:10.1117/1.3506192

1 November 2010 Progress in high-performance quantum cascade lasers

Arkadiy A. Lyakh, Richard Maulini, Alexei G. Tsekoun, Chandra Kumar N. Patel

Author Affiliations +

Optical Engineering, Vol. 49, Issue 11, 111105 (November 2010). https://doi.org/10.1117/1.3506192

Abstract

Because of their compact size, reliability, tunability, and convenience of direct electrical pumping, quantum cascade lasers have found a number of important civilian and defense applications in the midwave infrared and long-wave-infrared spectral range. Most of these applications would benefit from higher laser optical power and higher wall-plug efficiency. We describe some of the most important features of high-efficiency quantum cascade laser design and realization of high-power quantum cascade laser systems. Specifically, optimization of the active region and waveguide, thermal management on the chip level, and impact of the laser facet coating on laser efficiency and scaling of optical power with cavity length are discussed. Also, we present experimental results demonstrating multiwatt operation with reliability of at least several thousands of hours on a system level.

©(2010) Society of Photo-Optical Instrumentation Engineers (SPIE)

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Arkadiy A. Lyakh, Richard Maulini, Alexei G. Tsekoun, and Chandra Kumar N. Patel "Progress in high-performance quantum cascade lasers," Optical Engineering 49(11), 111105 (1 November 2010). https://doi.org/10.1117/1.3506192

Published: 1 November 2010

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