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  • 2015 European Conference on Lasers and Electro-Optics - European Quantum Electronics Conference
  • (Optica Publishing Group, 2015),
  • paper PL_2_1

High Performance Quantum Cascade Lasers from the Mid-IR to the Far-IR and their impact on Science and Technology

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Abstract

The mid-infrared and far-infrared regions of the spectrum (3-300 μm) for a long time did not realize its full potential, scientifically and technologically, notwithstanding its paramount importance for chemistry, spectroscopy and a myriad of potential applications, mainly because of the lack of a compact, room temperature, widely tunable and eye-safe laser. This situation drastically changed with the advent of the Quantum Cascade Laser (QCL) in 1994 and its subsequent momentous development in the following two decades [1–4]. I will highlight the fundamentally different design principles and underlying physics of QCLs, which showcase a rich variety of optical and transport phenomena. I will illustrate the impact of QCLs in spectroscopy, chemical physics and atmospheric chemistry and technology, present and future, ranging from IR countermeasures to a wide range of sensor applications including health care, the environment, security and, ultimately, the “internet of everything”.

© 2015 IEEE

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