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Progress in Long Wavelength Quantum Cascade Lasers

Jérôme Faist, Christoph Walther, Milan Fischer, Giacomo Scalari, Lorenzo Sirigu, and Maria Amanti

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Abstract

We report operation of terahertz quantum cascade lasers at frequencies from 2.0 THz down to 1.2 THz by using a bound-to-continuum based lasing scheme which combines high injection efficiency and low intersubband absorption.

© 2007 Optical Society of America

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