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Conferences > CLEO_SI > 2012 > CTh3N > CTh3N.1

Engineering the Intersubband Lifetime with Interface Roughness in Quantum Cascade Lasers

YenTing Chiu, Yamac Dikmelik, Qiang Zhang, Jacob B. Khurgin, and Claire F. Gmachl

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Abstract

Due to interface roughness scattering, the lower laser state depopulation lifetime of Quantum Cascade lasers can be significantly reduced (e.g. from 0.25 to 0.09 picosecond theoretically) by placing additional interfaces strategically in the active region.

© 2012 Optical Society of America

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