MIOMD-XI Speakers    
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1.  Dr. Mathieu Carras, Alcatel-Thales III-V Lab, FRANCE
Invited Talk: Quantum Cascade Detectors
Speaker Biography: Mathieu Carras is born in 1979. He graduated from Ecole Centrale Paris in 2003. From 2003 to 2005 he worked on quantum well photodetectors (QWIPs) and InAsSb detector to obtain his PhD of University Denis Diderot. From 2006 he was Hired in the Quantum Cascade Lasers (QCL) Team and continued to work in collaboration with University Denis Diderot on Quantum Cascade Detectors (QCD) Since 2011 He his head of the QCL team. His research activities are mainly focusing high power QCLs and DFB/ External cavity QCLs for spectroscopy. He also works on the integration of QCL on silicon. He continues to have activities on thermal imaging using quantum wells.

Summary: Photodetectors based on semiconductor quantum wells have been developed over the last decades, mostly for thermal imaging applications in the long wave infrared range (LWIR) (8-12 μm). Thanks to the tunability of the quantum well structures, these devices reach nowadays other wavelength ranges: the very long wave infrared range (VLWIR) (12-20 μm) for applications such as space detection and the mid wave infrared range (MWIR) (3-5 μm) for imaging. Quantum cascade detectors have been proposed in 2001 as photovoltaic detectors and studied since 2003 in a collaborative team between III-V Lab and University Denis Diderot in Paris. During those years, QCDs have been designed and fabricated at different wavelength from MIR to THz.
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