Person: Chevalier, Paul
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Chevalier
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Chevalier, Paul
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Publication Self-starting harmonic frequency comb generation in a quantum cascade laser(Springer Nature, 2017) Kazakov, Dmitry; Piccardo, Marco; Wang, Yongrui; Chevalier, Paul; Mansuripur, Tobias; Xie, Feng; Zah, Chung-en; Lascola, Kevin; Belyanin, Alexey; Capasso, FedericoPublication Watt-Level Continuous-Wave Emission from a Bifunctional Quantum Cascade Laser/Detector(American Chemical Society, 2017) Schwarz, Benedikt; Wang, Christine A.; Missaggia, Leo; Mansuripur, Tobias S.; Chevalier, Paul; Connors, Michael K.; McNulty, Daniel; Cederberg, Jeffrey; Strasser, Gottfried; Capasso, FedericoBifunctional active regions, capable of light generation and detection at the same wavelength, allow a straightforward realization of the integrated mid-infrared photonics for sensing applications. Here, we present a high performance bifunctional device for 8 μm capable of 1 W single facet continuous wave emission at 15 °C. Apart from the general performance benefits, this enables sensing techniques which rely on continuous wave operation, for example, heterodyne detection, to be realized within a monolithic platform and demonstrates that bifunctional operation can be realized at longer wavelength, where wavelength matching becomes increasingly difficult and that the price to be paid in terms of performance is negligible. In laser operation, the device has the same or higher efficiency compared to the best lattice-matched QCLs without same wavelength detection capability, which is only 30% below the record achieved with strained material at this wavelength.