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23 December 2004 Room-temperature CW operation of (lambda~9 μm) InP-based quantum cascade lasers
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Room temperature CW operation of quantum cascade lasers has recently been demonstrated. However, this important performance milestone still remains a technological challenge. QCLs are characterized by high electrical power consumption (3 - 5 W) and low wall plug efficiencies (1 - 4%). This leads to considerable self-heating that can block CW operation. In order to overcome this self-heating device fabrication has to be optimized for high thermal extraction. In this paper we will demonstrate the factors that influence CW operation in quantum cascade lasers (QCLs). We will compare the performance of different device processing design to achieve maximum thermal dissipation and reduced power consumption.
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Sebastien Forget, Clemont Faugeras, Elizabeth Boer Duchemin, Jean-Yves Bengloan, Carlo Sirtori, Michel Calligaro, Olivier Parillaud, Hideaki Page, Marcella Giovannini, and Jerome Faist "Room-temperature CW operation of (lambda~9 μm) InP-based quantum cascade lasers", Proc. SPIE 5620, Solid State Laser Technologies and Femtosecond Phenomena, (23 December 2004);

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