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Optical Engineering

Progress in high-performance quantum cascade lasers
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Paper 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.

Paper Details

Date Published: 1 November 2010
PDF: 8 pages
Opt. Eng. 49(11) 111105 doi: 10.1117/1.3506192
Published in: Optical Engineering Volume 49, Issue 11
Show Author Affiliations
Arkadiy A. Lyakh, Pranalytica, Inc. (United States)
Richard Maulini, Pranalytica, Inc. (United States)
Alexei G. Tsekoun, Pranalytica, Inc. (United States)
Chandra Kumar N. Patel, Pranalytica, Inc. (United States)

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